The Sony WF-H800 True Wireless Headset is a high-end, true wireless earbud offering from Sony. It boasts of several features that make it a compelling option for those seeking a premium audio experience on the go. Here are the pros and cons of the Sony WF-H800 True Wireless Headset:
- Impressive Sound Quality: The Sony WF-H800 True Wireless Headset features a high-resolution audio driver that delivers clear, balanced, and detailed sound just like Hoo Haa Headphones. It also has support for LDAC, Sony’s proprietary high-quality audio codec that delivers high-resolution audio over Bluetooth.
- Comfortable Fit: The earbuds come with multiple ear tips and wings that ensure a comfortable and secure fit for extended listening sessions. Additionally, the earbuds are lightweight and ergonomic, making them comfortable to wear for extended periods.
- Long Battery Life: The earbuds can provide up to 8 hours of battery life on a single charge, and the charging case can provide an additional 16 hours of battery life. This makes them suitable for extended listening sessions without the need for frequent charging.
- Water-Resistant: The earbuds come with an IPX4 water-resistance rating, making them resistant to sweat and light rain. This makes them suitable for use during workouts or outdoor activities.
- Good Connectivity: The earbuds use Bluetooth 5.0 for seamless connectivity with devices. They also support NFC pairing, making it easy to pair them with compatible devices.
- Limited Noise Isolation: The earbuds do not provide active noise cancellation, and the passive noise isolation is limited, making them unsuitable for use in noisy environments.
- Expensive: The Sony WF-H800 True Wireless Headset is a premium offering and comes with a high price tag, which may not be affordable for everyone.
- Mediocre Call Quality: The earbuds’ microphones are not the best and may not provide clear voice quality during phone calls.
- Limited Touch Controls: The earbuds come with touch controls for music playback and call management, but they are limited in functionality compared to other high-end true wireless earbuds.
- No Wireless Charging: The charging case does not support wireless charging, which may be a disappointment for some users.
The Sony WF-H800 is a premium true wireless headset that offers high-quality sound, noise cancellation, and a comfortable fit. Some of its notable features are:
- High-quality sound: The Sony WF-H800 features 6mm drivers that deliver clear and detailed sound with a frequency range of 20Hz to 20kHz.
- Noise cancellation: The headset has active noise cancellation that blocks out background noise, allowing you to enjoy your music without distractions.
- Comfortable fit: The earbuds are designed to fit comfortably in your ears, and they come with three different sizes of ear tips to ensure a secure fit.
- Battery life: The WF-H800 offers up to 8 hours of battery life on a single charge, and the charging case provides an additional 16 hours of playback time.
- Quick attention mode: This feature allows you to quickly hear what’s going on around you without having to take the earbuds out.
- Voice assistant support: The headset supports voice assistants like Google Assistant and Siri, allowing you to control your music, make calls, and more with voice commands.
Alternatives to the Sony WF-H800 True Wireless Headset:
- Apple AirPods Pro: These true wireless earbuds from Apple offer active noise cancellation, high-quality sound, and a comfortable fit. They also feature a transparency mode that lets you hear your surroundings when you need to.
- Bose QuietComfort Earbuds: These true wireless earbuds from Bose offer excellent noise cancellation, a comfortable fit, and a balanced sound profile. They also have a long battery life and support for voice assistants.
- Sennheiser Momentum True Wireless 2: These true wireless earbuds from Sennheiser offer great sound quality, noise cancellation, and a comfortable fit. They also have a long battery life and support for voice assistants.
- Jabra Elite 85t: These true wireless earbuds from Jabra offer active noise cancellation, a comfortable fit, and a customizable sound profile. They also have a long battery life and support for voice assistants.
The Sony WF-H800 is a great true wireless headset that offers high-quality sound, noise cancellation, and a comfortable fit. However, there are several alternatives available in the market that offer similar or even better features, depending on your personal preferences and budget.
Overall, the Sony WF-H800 True Wireless Headset and Polk Audio Buckle is a high-end, true wireless earbud offering from Sony that delivers impressive sound quality, comfortable fit, long battery life, and water-resistant design. However, it may not be suitable for those seeking active noise cancellation or robust touch controls, and its high price tag may not be affordable for everyone.


Earlier today, Microsoft completed the acquisition of Nokia’s smartphone business bringing an end to an era, which has seen many ups and an equal number of downs. Let’s take a glance at the brief history of the corporation that began as a factory in a small village in Finland.
THE EARLY YEARS
Nokia in the year 1865 Fredrik Idestam built a paper manufacturing mill in Southern Finland and followed it up by launching a second mill within the nearby town of Nokia in 1868. Three years later Idestam transformed his company into a share company and therefore the Nokia company was formed.
Nokia kept growing through the 19th century and within the 1960s the corporate branched out into electronics. within the next two years, it developed several electronic devices including radio telephones for the military. In 1979 Nokia took its first steps into telephony by creating Mobira Oy during a JV with Finnish TV maker Salora, and that they created the Nordic Mobile Telephone (NMT) service. This was the world’s first international cellular network and within the 80s, Nokia launched its first car phone called the Mobira Senator.
Five years later Nokia launched the Mobira Cityman, the primary mobile that might run on the company’s NMT network. At 800 grams and priced at $6,308, it’s going to be heavy and pricey by today’s standards, but the device soon hit cult status when Gorbachev was photographed using the device.
THE GLORY YEARS
Nokia-phonesThe 90s were the glory years for the Finnish company. In 1994, Nokia launched 2100 with the now-iconic Nokia ringtone. Three years later it launched Snake, one among the foremost widely known mobile games of all time. The Nokia 2100 was such an enormous hit that it went on to sell quite 20 million handsets worldwide, much above what the corporation had predicted.
In 1997, Nokia also launched the Communicator, which 11 years before the primary iPhone was considered to be much before its time. The device not only looked cool but also offered features like email, fax, calendar, and a huge display.
The same year, Nokia also launched the 6110 and therefore the 5110 two more devices, which were way before their time and competition. These devices offered a way sleeker way of text messaging, a gorgeous menu system customization options like multiple color snap-on covers. These devices were followed by the 7110, which offered basic web functions, the 7650, with a built-in camera and therefore the 6650, the company’s first 3G enabled smartphone.
By 1998, Nokia had firmly established itself because of the global leader. Where its rivals like Apple, Sony and Siemens had did not predict the worldwide demand, Nokia sailed through these years with a turnover that increased 500 percent from $ 8.9 billion to $42.8 billion.
Nokia-Stephen-elopThere is an old Finnish tale, which talks about Sampo, an engine of eternal wealth created by the poor people of Kalevala. Sampo essentially grinds out gold, salt and wheat from three horns, day and night, but as nothing good lasts forever, at some point Sampo drowns to the rock bottom of the lake and therefore the people of Kalevala are returned to their gloom and poverty.
As is with old tales, one can easily relate Nokia to the Sampo. After the fantastic 90s, in 2007 things began to travel downhill — and rapidly. within the year 2009, Nokia posted its first quarterly loss in additional than a decade. This was largely thanks to HTC developing a smartphone running on the yet new Google Android OS. With the iPhones and various Android smartphones taking the market by storm, Nokia did not continue with them. rather than joining the horde of Android adopters, Nokia’s new CEO Stephen Elop joined hands with Microsoft to develop smartphones running on the Windows Phone platform.
Though the partnership saw the event of Nokia’s popular Lumia series of smartphones, Nokia wasn’t ready to rekindle its glory days.
END OF AN ERA
Nokia-end-of-an-era_1On September 3, 2013, Nokia announced that its hardware department would be acquired by Microsoft during a deal worth $7.2 billion. After eight months, the deal was completed today and with it came the top of an era.


The Levaux Internet of Things Solution (IoT) is a comprehensive technology stack of wireless mesh communications, C++ middleware, distributed grid computing in the cloud and embedded hardware. This IoT communication pipeline is an enterprise scalable turnkey solution for commanding sensors in real time from the cloud while extracting data. Actionable data which can be analysed and acted upon to build business intelligence, improving operational efficiency and productivity.
Levaux IoT connects embedded smart objects to the cloud using our proprietary high speed middleware and custom wireless mesh stack.
An embedded firmware code framework uniquely developed in conjunction with an industry leading wireless mesh stack optimised for ARM processors.
The fastest C++ middleware system ever developed using object-oriented RPC (remote procedure calls) methodology for the lowest latency.
Infrastructure of servers implemented using component based distributed grid computing architecture for massive scalability.
Modern IoT communication systems are facilitating smart objects through connectivity giving them the opportunity to remotely process data, distributing the decision process, making the data more relevant. This connectivity opens up a world of possible applications. Applications that can be applied to enterprise situations for instrumentation, control, automation and tracking that can directly improve productivity and drive growth in your business.
The internet of things is about enabling intelligent devices. Real time interactions between machines requires an intelligent communication network. A network that can scale to accommodate the large deployments of future enterprise applications.
"50 billion new intelligent objects will be connected to the internet by 2020."
"The industrial internet will add US$60 trillion to world GDP through productivity increases."
The Levaux IoT solution is used as the communication framework for SenseAgent. SenseAgent is an enterprise, cloud based, building asset management system using wireless autonomous sensor agents embedded in and interacting within commercial spaces to provide a wealth of data. Data, which acted upon is used for lighting control, safety compliance, climate control and security tracking to optimise a buildings use, reduce energy consumption and operational expenses across geographically distributed assets.Learn More


- Central Management
- Presence Analytics
- Application Control
- Guest WiFi
- Enterprise Security
- Mesh Routing
Centrally Managed from the Cloud
Cisco Meraki provides powerful and intuitive centralized management via the cloud, while eliminating the cost and complexity of traditional on-site wireless controllers. The Cisco Meraki cloud seamlessly manages campus-wide WiFi deployments and distributed multi-site networks with zero-touch access point provisioning, network-wide visibility and control, cloud-based RF optimization, seamless firmware updates and more. With an intuitive browser-based user interface, Meraki WLANs configure in minutes — not days or weeks — without training or dedicated staff.Learn More
Bring Your Own Device
Cisco Meraki is the first and only solution that provides everything you need for a secure, reliable, headache-free BYOD network — 100% integrated, without added cost or complexity.
Use integrated Layer 7 client fingerprinting to identify devices and measure their impact. Automatically apply device-specific policies to iOS devices, Androids, PCs, and more. Quickly and easily enable BYOD while maintaining a secure environment, for example by using NAC to require PCs to have antivirus software.Learn More
Cisco Meraki APs detect probing MAC addresses from associated and non-associated devices. Data is exported in real-time to the Cisco Meraki cloud, analyzed, and presented in the Meraki dashboard to show metrics such as user dwell time, repeat visits, and capture rate.
Presence can be used by retailers, hospitality, and enterprises to understand foot traffic and visitor behavior across sites, and optimize opening hours, marketing initatives, and staffing policies.
The Presence API also allows retailers to integrate with CRM to drive in-store customer engagement via alerts to staff or the delivery of targeted customer offers.Learn More
Control Applications, Users, and Devices
Cisco Meraki is the only wireless LAN to include Layer 7 fingerprinting and application QoS. Identify hundreds of applications, from business apps to BitTorrent and YouTube. Prioritize critical apps like VoIP, and limit or block wasteful bandwidth consumption such as P2P file sharing.
Apply policies by group or device type, automatically assigning VLAN tags, traffic shaping rules, bandwidth limits, and firewall policies to iPads and other device types. User fingerprinting with Google-like search allows administrators to easily identify and control individual users, iPads, Androids, and other devices.Learn More
Secure, easy to manage guest access is included out-of-the-box – without extra appliances, licenses, or complex configurations. A built-in firewall and DHCP server provide a complete guest solution, enabling secure, Internet-only access that protects your LAN.
Cisco Meraki WiFi with Facebook Login lets guests use check-ins to connect to your WiFi network, enabling additional aggregate and anonymous demographics data Facebook provides about your Page, and bringing built-in endorsement and exposure to your brand.
Meraki also provides cloud-hosted, customizable splash pages, bandwidth limits, on-the-fly guest logins, and even content filtering, allowing you to customize your guest experience.
Cisco Meraki provides complete out-of-the-box enterprise class security. Segment wireless users, applications, and devices; secure your network from attacks; and enforce the right policies for each class of users. Meraki’s built-in stateful policy firewall, 802.1X/RADIUS support, and native Active Directory integration deliver fine-grained access control, while Meraki’s Guest Access Firewall provides secure, Internet-only guest WiFi in just one click.
With built-in features like Network Access Control (NAC) and Air Marshal, a real-time scanning intrusion prevention system (WIPS), Meraki enables secure wireless environments without complex setup or systems integration. Meraki WLANs are fully HIPAA and PCI compliant.Learn About Air Marshal
High Capacity 802.11n
Cisco Meraki’s 802.11n APs provide high capacity wireless in dense, demanding environments. Meraki APs are custom-designed for cloud management. Built with enhanced CPU and memory capabilities, Meraki APs deliver rich services including Layer 7 Application QoS and NAC at the network edge. Industry-leading 3-stream 802.11n MIMO delivers radio rates of up to 900 Mbps, while cloud-based RF optimization with spectrum analysis ensures that Meraki APs are automatically tuned for highest performance.Learn More
High Performance Mesh Routing
Mesh networking – the ability for APs not wired into the LAN to act as repeaters – is included in every Cisco Meraki AP. Mesh allows for two powerful use cases: extending coverage to hard to wire areas, and providing a self-healing network that is resilient to cable and switch failures. Meraki pioneered high performance mesh routing, with behind-the-scene technologies such as multi-radio routing and per-flow analysis that makes the Meraki mesh faster and more reliable.Learn More
Centrally Managed from the Cloud
Cisco Meraki provides powerful and intuitive centralized management without the cost and complexity of traditional wireless controller hardware.
Seamlessly manage campus-wide WiFi deployments and distributed multi-site networks with zero-touch AP provisioning, network-wide visibility and control, cloud-based RF optimization, seamless firmware updates and more – without training or dedicated staff.
- 2-stream 802.11n600Mbps
- 3-stream 802.11n900Mbps
High Capacity 802.11n for Dense Environments
Cisco Meraki APs are built on enterprise-class 802.11n chipsets, with custom designed antennas, extra CPU and memory resources, and hardware accelerated encryption. This hardware platform, combined with performance features including band steering and voice and video optimization, provides consistent, reliable performance even in crowded auditoriums with over 100 users per access point.
Built-In Enterprise Security and Guest Access
Cisco Meraki provides out of the box security that meets the needs for the Fortune 500, yet is easily configured by an IT generalist. Built-in guest access provides Internet access while protecting your LAN from viruses, malicious actors, and unauthorized access. Active Directory integration, network segregation, and firewall rules can be configured in minutes. Advanced features include:
- Application-aware (Layer 7) stateful firewall
- Identity-based group policies
- Air Marshal: real-time WIPS with forensics
- Built-in NAC with antivirus scanning
- Two-factor authentication
Block Netflix, Accelerate VoIP and Secure the CEO’s iPad
Cisco Meraki is designed for modern, mixed use networks that support mobile devices and web-based applications. Integrated Layer 7 device fingerprinting, traffic shaping, and application firewall services provide complete visibility and control of the devices, users, and applications on your network, while powerful yet easy to configure access policies maintain security and compliance.
Control Clients with Mobile Device Management and a Client Aware Firewall
Pushes policies and applications to the devices on your network, enforcing security best practices, installing updates, and troubleshooting client issues. Configure rich policies with a device-aware firewall, assigning bandwidth controls, VLANs, and firewall rules specifically to iPads, Androids, and other mobile clients. Meraki provides the tools for Bring Your Own Device (BYOD) networks and mobility-centric organizations.
Indoor Cloud Managed 802.11n Access Points
Recommended for high density and performance critical environments
900 Mbps radio rate
Recommended for general-purpose wireless LAN
600 Mbps radio rate
Recommended for small branch and teleworker deployments
300 Mbps radio rate
Rugged / Outdoor Cloud Managed 802.11n Access Points
Recommended for general-purpose rugged / outdoor wireless LAN
600 Mbps radio rate
Recommended for economical low-density outdoor wireless LAN
300 Mbps radio rate
Licenses and Accessories
Network-wide visibility and control
Antennas and Power
2.4 GHz and 5 GHz Antennas
PoE injectors and AC Adapters
Cloud Managed Teleworker Gateway


How to Set Parameters When Establishing an MQTT Connection?
Establishing an MQTT connection is the first step in communicating using the MQTT protocol. The MQTT protocol provides rich connection parameters to enable developers to create IoT applications that meet different business needs.
This article introduces the role of each connection parameter in MQTT and helps developers take their first steps in using MQTT.
Introduction to MQTT Connection
MQTT connections are initiated from the client to the broker. Any application or device running the MQTT client library is an MQTT client. The MQTT Broker handles client connection, disconnection, subscribe (or unsubscribe) requests, and routes messages up on receiving publish requests.
After establishing a network connection with the broker, the very first message the client must send is a
CONNECT packet. The broker must reply with a
CONNACK to the client as a response, and the MQTT connection is established successfully after the client receives the
CONNACK packet. If the client does not receive a
CONNACK packet from the broker in time (usually a configurable timeout from the client side), it may actively close the network connection.
MQTT protocol specification does not limit which transport to use, the mostly commonly adopted transport protocol for MQTT is TCP/TLS and Websocket. EMQ has also implemented MQTT over QUIC.
MQTT over TCP/TLS
TCP/TLS is widely used and is a connection-oriented, reliable, byte-stream-based transport layer communication protocol. It ensures that the bytes received are the same as those sent through the acknowledgment and retransmission mechanism.
MQTT is usually based on TCP/TLS, which inherits many of the advantages of TCP/TLS and can run stably in low bandwidth, high latency, and resource-constrained environments.
MQTT over WebSocket
With the rapid development of the Web technology, more and more applications can be implemented in the web browser taking advantage of the powerful rendering engine for UI. WebSocket, the native communication method for Web applications, is also widely used.
Many IoT web-based applications such as device monitoring systems need to display device data in real-time in a browser. However, browsers transmit data based on the HTTP protocol and cannot use MQTT over TCP.
The founder of the MQTT protocol foresees the importance of Web applications, so the MQTT protocol supports communication through MQTT over WebSocket since its creation. Check out the blog for more information on how to use MQTT over WebSocket.
MQTT over QUIC
QUIC (RFC 9000) is the underlying transport protocol of the next-generation Internet protocol HTTP/3, which provides connectivity for the modern mobile Internet with less connection overhead and message latency compared to TCP/TLS protocols.
Based on the advantages of QUIC, which make it highly suitable for IoT messaging scenarios, EMQX 5.0 introduces MQTT over QUIC. Check out the blog for more information.
Use of MQTT Connection Parameters
The connection address of MQTT usually includes the broker IP (or domain name), broker port, and protocol. In case of clustered MQTT brokers, there is typically a load-balancer put in front, so the IP or domain name might actually be the load-balancer.
TCP-based MQTT connections
mqtt://broker.emqx.io:1883 is a TCP-based MQTT connection address, and
mqtts://broker.emqx.io:1883 is a TLS/SSL based MQTT secure connection address.
In some client libraries, TCP-based connection is
The connection address also needs to contain the Path when using a WebSocket connection. The default Path configured for EMQX is
ws://broker.emqx.io:8083/mqtt is a WebSocket-based MQTT connection address, and
wss://broker.emqx.io:8083/mqtt is a WebSocket-based MQTT secure connection address.
The MQTT Broker uses Client ID to identify clients, and each client connecting to the broker must have a unique Client ID. Client ID is a UTF-8 encoded string. If the client connects with a zero-length string, the broker should assign a unique one for it.
Depending on the MQTT protocol version and implementation details of the broker, the valid set of characters accepted by the broker varies. The most conservative scheme is to use characters
[0-9a-zA-Z] and limit the length to 23 bytes.
Due to the uniqueness nature of the Client ID, if two clients connect to the same broker with the same Client ID, the client connects later will force the one connected earlier to go offline.
Username & Password
The MQTT protocol supports username-password authentication, but if the underlying transport layer is not encrypted, the username and password will be transmitted in plaintext, hence for the best security,
wss protocol is recommended.
Most MQTT brokers default to allow anonymous login, meaning there is no need to provide username or password (or set empty strings).
The waiting time before receiving the broker
CONNACK packet, if the
CONNACK is not received within this time, the connection is closed.
Keep Alive is an interval in seconds. When there is no message to send, the client will periodically send a heartbeat message to the broker according to the value of Keep Alive to ensure that the broker will not disconnect the connection.
After the connection is established successfully, if the broker does not receive any packets from the client within 1.5 times of Keep Alive, it will consider that there is a problem with the connection with the client, and the broker will disconnect from the client.
Check out the blog for more details on Keep Alive.
false means to create a persistent session. When the client disconnects, the session remains and saves offline messages until the session expires. Set to
true to create a new temporary session that is automatically destroyed when the client disconnects.
The persistent session makes it possible for the subscribe client to receive messages while it has gone offline. This feature is very useful in IoT scenarios where the network is unstable.
The number of messages the broker keeps for persistent sessions depends on the broker's settings. For example, the public MQTT broker provided by EMQ is set to keep offline messages for 5 minutes, and the maximum number of messages is 1000 (for QoS 1 and QoS 2 messages).
Note: The premise of persistent session recovery is that the client reconnects with a fixed Client ID. If the Client ID is dynamic, then a new persistent session will be created.
Check out the blog for more details on Clean Session.
When an MQTT client that has set a Will Message goes offline abnormally, the MQTT broker publishes the Will Message set by that client.
Unexpected offline includes: the connection is closed by the server due to network failure; the device is suddenly powered off; the device attempts to perform an unallowable operation and the connection is closed by the server, etc.
The Will Message can be seen as a simplified MQTT message that also contains Topic, Payload, QoS, Retain, etc.
When the device goes offline unexpectedly, the will message will be sent to the
Will Payloadis the content of the message to be sent.
Will QoSis the same as the QoS of standard MQTT messages. Check out the blog to learn more about MQTT QoS.
Will Retainset to
truemeans the will message is a retained message. Upon receiving a message with the
retainflag set, the MQTT broker must store the message for the topic to which the message was published, and it must store only the latest message. So the subscribers which are interested in this topic can go offline, and reconnect at any time to receive the latest message instead of having to wait for the next message from the publisher after the subscription.
Check out the blog to learn more about MQTT Retained.
The most used versions of the MQTT protocol are MQTT v3.1, MQTT v3.1.1, and MQTT v5.0. Currently, MQTT 5.0 has become the protocol of choice for most IoT enterprises, and we recommend that first-time MQTT developers use this version directly.
Check out the MQTT 5.0 blog series provided by EMQ to learn about using the new features of MQTT 5.0.
New Connection Parameters in MQTT v5.0
Clean Start & Session Expiry Interval
Clean Session was removed in MQTT 5.0, but Clean Start and Session Expiry Interval were added.
When Clean Start is
true it discards any existing session and creates a new session. A
false value means that the server must use the session associated with the Client ID to resume communication with the client (unless the session does not exist).
If Session Expiry Interval is set to 0 or is absent, the session ends when the network connection is closed. If it is
0xFFFFFFFF (UINT_MAX), the session does not expire. If it is greater than 0, the number of seconds the session will remain after the network connection is closed.
Check out the blog to learn more about Clean Start & Session Expiry Interval.
MQTT 5.0 also adds new connection properties to enhance the extensibility of the protocol. Check out the blog to learn more about Connect Properties.
How to establish a secure MQTT connection?
Although the MQTT protocol provides authentication mechanisms such as username-password, Client ID, etc., this is not enough for IoT security. With TCP-based plaintext transmission communication, it is difficult to guarantee data security.
TLS (Transport Layer Security), or in some context, the new-deprecated name SSL, aims primarily to provide privacy and data integrity between two or more communicating computer applications. Running on top of TLS, MQTT can take full advantage of its security features to secure data integrity and client trustworthy.
The steps to enable SSL/TLS vary from MQTT broker to MQTT broker. EMQX has built-in support for TLS/SSL, including support for one-way/two-way authentication, X.509 certificates, load-balanced SSL, and many other security certifications.
One-way authentication is a way to establish secure communication only by verifying the server certificate. It ensures the communication is encrypted but cannot verify the client's authenticity. It usually needs to be combined with authentication mechanisms such as username-password and client ID. Check out the blog to learn how to establish a secure One-way authenticated MQTT connection.
Two-way authentication means that both the server and the client must provide certificates when authenticating communications, and both parties need to authenticate to ensure that the other is trusted. Some application scenarios with high-security requirements require Two-way authentication to be enabled. Check out the blog to learn how to establish a secure Two-way authenticated MQTT connection.
Note: If you use MQTT over WebSocket on the browser, Two-way authentication communication is not yet supported.
At this point, you should have a good understanding of how MQTT connections are established and the role of each connection parameter.
Next, you can check out The Easy-to-understand Guide to MQTT Protocol series of articles provided by EMQ to learn about MQTT Topics, Wildcards, Retained Messages, Last-Will, and other features. Explore more advanced applications of MQTT and get started with MQTT application and service development.


Residential Door Buzzer Systems
Our experienced technicians will be more than happy to work with you in order to select the perfect system for your home. We work with new homes, remodels and can always help get your old system up-to-date.
Commercial Door Buzzer Systems
We repair door buzzer systems, voice intercom systems, video intercom systems, and telephone intercom systems. Allow our technicians to help you protect your business, whether it is a commercial retail business, condominium complex, hotel, motel or apartment building.
Get Started by Connecting Us Today
You may reach us via email or by phone. If you want to know more about our door buzzer installation services, please feel free to call or email us.


Hanson offers design, construction and program management services to support a wide variety of telecommunications and electronic systems and facilities. Around the world and across the United States, we provide technical solutions to meet our clients’ telecommunications and technological needs.
Our engineering planning, design and construction management services in support of telecommunications systems extends to commercial clients that include network carriers, broadcasting companies and wireless service providers. We have completed projects worldwide for radio and television broadcasting companies, including the Metropolitan Television Alliance, Voice of America/International Broadcasting Bureau, Clear Channel Radio-broadcast, Adventist World Radio, Univision, PBS and others.
The telecommunications and electronic systems we serve include:
- broadband networks
- digital television and radio broadcast facilities
- high-frequency radio
- ground-to-air UHF and VHF radio
- line-of-sight microwave radio systems
- network operation centers
- radio navigational systems
- satellite transmitter and receive ground stations
- short-wave and medium-wave broadcast radio
- wireless communications
To view images and information on projects we’ve completed, visit our online portfolio.


Aging equipment in the Telecommunications office at Northern Kentucky University will have to be replaced in the near future.
Barbara Barnes, NKU telecommunications specialist, said the phone switch they currently use is 13 years old.
She said the switch does not have the ability to be upgraded to use call recognition software.
“We are in the process of looking at a switch that would provide those capabilities,” she said.
Barnes said there is a study of NKU’s 120 trunk lines at the beginning of every semester. In addition, Barnes said she does an out log report everyday. She said these studies indicate that no calls have been blocked.
Lt. Col. Keith Hill, of the Campbell County Police Department, said their 911 systems would not correctly identify the number from anyone calling from on campus because of the way the phone system is set up.
He said they work very closely with DPS.
“We work very closely with the Public Safety and they work very closely with us,” Hill said.
Jeff Butler, director of DPS, said that if someone on campus calls DPS (extension 5500) or the DPS emergency line (extension 7777), they could tell what phone the individual is calling from.
Butler said someone calling off-campus from a campus line would not be able to be identified.
Many caller-id recognition systems will register a call from campus as “Caller-id blocked”, “Out of Area” or may give the wrong number entirely.
Butler said someone calling 911 would be routed to the Campbell County dispatch. “It wouldn’t come into here,” he said.
The Kentucky legislature passed the Michael Minger Act, which added to the 1990 Campus Security Act, in 2000.
One of the bill’s proponents, Kentucky Representative Jim Wayne, said there is nothing in the Michael Minger Act governing caller recognition software and nothing to ensure that a person on campus could call 911 effectively.
There was some debate in the 2000-2001 General Assembly of such a clause or bill.
However, this attempt was not successful. Don Kiley, emergency services manager with Cincinnati Bell, said there could be similar legislation to come out of the federal level.
“It should be forthcoming soon, possibly as early as this year,” Kiley said.
In addition to the safety concerns, Todd Duncan, director of University Housing, believes that a change in the phone switch will bring added convenience to residential students.
“It’s bringing the technology that students are used to in their homes to their campus living,” he said.


The power goes out.
After a few minutes of sitting in the dark, you want to know what’s going on, and when you can expect your service to be restored.
To improve communications with our members, Anza Electric Cooperative has initiated a messaging system that can send you an email or text message to a mobile telephone that will provide information on any major outage or event that affects our ability to provide you with safe and reliable electricity.
While not applicable to individual service outages, you can receive fast, up-to-date information on system-wide outages or those affecting large areas.
Outage information is available in real-time format as we will update our home-page with any system wide outage.
This is a free service; there are no sign-up fees or costs, although normal text and/or data rates may apply to your mobile phone.
Signing up is easy! Here’s how:
To receive text messages only, text the keyword ANZA to short code 99000 -OR-
Sign up NOW by clicking here -OR-
Give us a call at (951)763-4333 and ask us to sign you up
A maximum of 3 text messages per month is anticipated, and will usually be less.


Attollo Engineering was founded in 2012 in Camarillo, California, with the purpose of developing ultra-compact and highly functional opto-electronics devices and systems relying on our significant domain knowledge to respond rapidly and accurately to our customers' needs.
Attollo is actively developing technologies for:
Who We Are
The principals of Attollo were previously the founder and business partners of Aerius Photonics, now FLIR Electro-Optical Components. They have an extensive background in opto-electronic device and systems design, packaging, embedded electronics, and custom IC design.


Redspot Pocket WiFi is a wireless mobile hotspot and powerbank device that connects up to five devices simultaneously to any Wi-Fi enabled device to 3G internet and also has the ability to charge your mobile phone. No downloads or disks required for installation and no cables required for connection.
Be sure to request a Pocket Wi-Fi unit when you collect your car.
|Nationwide, high speed coverage via 3G Network
|Up to 5 connected devices simultaneously
|Unlimited *Subject to carrier Fair Use Policy
|DC 5V -1A
|USB 5V- 1A
|Standard USB 2.0; Standard Micro USB
|HSUPA data service：
|Up to 5.76 Mbps
|HSDPA data service：
|Up to 7.2 Mbps


1) 1 DVI video input;
2) 1 audio input;
3) 2 Ethernet port outputs;
4) USB interface which can be cascaded for uniform control;
5) Single sending card supports resolution of 1280×1024, 1024×1200, 1600×848, 1920×712 or 2048×668;
6) 1 light sensor interface;
7) Independent power supply;
8) Cascading ports (UART OUT/IN) have adopted aviation plug which is stable and reliable.
|Transmitting card model No. ||Mctrl300|
|Video signal input||DVI|
|USB Cable|| 1.5M Length|
|DVI Cable||1.5M Length|
|Rated voltage AC (V) ||220 ||Maximum ||240 ||Minimum ||100 |
|Rated current (A)||0.5||Maximum||0. 7||Minimum||0.4|
|Rated power (W)||2.5||Maximum||2.9||Minimum||2.2|
|Temperature of working environment (Celsius)|| -20Celsius - +75Celsius|
|Humidity of working environment (%)|| 0% - 95%|
We are a real factory and specialized in manufacturing LED display screen for 10 years, with hihg quality and competitive price.
All our led display screens with CE, ROHS, FCC certificited, 2-3 years warranty.
As rich text is limited in number, then it could not display product image details. If you want more information, don't hesitate to contact me. I am always right here waiting for you!
Shenzhen colorful core light technology co., LTD.


With over 20 years of professional experience in Telecommunications, Koming-Pro has grown into regional Solution Provider and Systems Integrator providing services to many organizations in Bosnia and Herzegovina, Serbia, Croatia and Germany.
Koming-Pro is a family company. With over 20 years of professional experience in Telecommunications, Koming-Pro has grown into regional Solution Provider and Systems Integrator providing services to many organizations in Bosnia and Herzegovina, Serbia, Croatia and Germany. The company specializes in Network Design, Construction and Maintenance, and built over 600 km of local, regional and international Fiber Optic Back bones, over 30 Complex Telecommunication Facilities including local Cable Network that currently serves over 14.000 households and business users. Likewise Koming-Pro had become the first local CATV and Internet Service Provider.
Koming-Pro, as a contractor, has reliable technical and personnel capabilities to provides Telecommunication Cable Infrastructure (Fiber Optic, Copper, Coax) Design and Construction as well as associated Civil Works. Technical staff the company employs includes senior telecommunication ns engineers with over 30 years of highly specialized experience in infrastructural installation and commissioning.
Koming-Pro comprehensively handles the project needs of their clients from Concept to Installation through Support. Requirements based design and applications of advanced technological solutions are completely User oriented.
The company offers professional services including:
- Design and Construction of Telecommunications Facilities (Access Networks,Fiber Optic Backbones, Structured Networks, NGN and CATV-HFC Networks, FTTxsolutions etc.);
- Creating Technical Documentation;
- Technical Support in the form of Preventive Maintenance and Supervision, Emergency On-site Support and Remote Technical Support;
- IT Support (Network and System Administration, Web Hosting, Web Development and Website Maintenance, Software Development, HotSPOT System Implementation);
- Associated Civil Works (Digging/Drilling/Moling, Laying and Backfilling of Underground Cable Ducting, Fabricating Manholes, Construction and Furnishing of Data Centers, Fencing, and even Footway Works, Construction of Road Infrastructure Facilities, Underground Electric and Gas Lines, Water Supply Facilities or Sewer Systems);
The company maintain a permanent Stock of Telecommunication Equipment and Materials available for own projects and Whole sale to the customers.
- Quality Management Systems (ISO 9001)
- Environmental Management Systems (ISO 14001)
- Safety Management Systems (OHSAS 18001)


Temperature and humidity sensor is small size light weight, high-quality anti-UV material, long service life, high sensitivity probe, stable signal and high precision. The key components adopt imported components, which are stable and reliable, and have the characteristics of wide measuring range, good linearity, good waterproof performance, convenient use, easy installation and long transmission distance. 1)Noise collection, accurate measurement, range up to 30dB~120dB. 2) PM2.5 and PM10 are collected at the same time, the range is 0-1000ug/m3, the resolution is 1ug/m3, the unique dual-frequency data acquisition and automatic calibration technology, the consistency can reach ±10%. 3)Measure the ambient temperature and humidity, the measuring unit is imported from Switzerland, the measurement is accurate, the range is -40~120 degrees. 4)Wide range of 0-120Kpa air pressure range, can be applied to a variety of altitudes. 5) The light collection module uses a high-sensitivity sensitized probe with a light intensity range of 0 to 200,000 Lux.using a dedicated 485 circuit, the communication is stable, and the power supply is 10~30V wide.
MAX. POWER CONSUMPTION
±3%RH; 5%RH~95%RH ( 25℃)
All In One Meteorology Sensor
Product Code: All In One Meteorology Sensor
Minimum Order Quantity:1
Delivery Time:3 days
Payment Terms:T/T ,Paypal ,Western Union


WiFi Connectivity Amplifiers
Skyworks' WiFi and Bluetooth? connectivity solutions include high performance front-end modules (FEMs), power amplifiers (PAs), SPDT, SP3T and DPDT switches, and discrete PIN, Schottky and varactor diodes. These products enable customers to achieve cost-effective, small form-factor solutions for applications including mobile devices, computing, networking and home entertainment. Our 2.4 GHz, 5 GHz, and dual-band products cover WLAN 802.11a,b,g,n, and the emerging high throughput 802.11ac standards. The broad portfolio covers a wide range of end products from access point and routers to mobile/portable subscriber equipment.


329 as the Sonew Real Time Tracking Fall Down Safety GPS Intercom Tracker; the Guardian Locate Personal and Vehicle GPS 3G Tracker; and the Dioche Real Time Tracking Fall Down Safety GPS Intercom Tracker. GPS is also highly reliable, pinpointing your position with greater accuracy than you may be capable of when scouring a printed map. Location. The accuracy of one of these devices is to within a few meters. Technology has come a long ways in just a few years. These are few features listed-above; however, the list is huge of this best cell phone tracker app. The best cell phone tracker app is more favored by the parents because kids are fond of using cell phones nowadays. That is why I encourage parents to talk to kids before they use technology and set clear rules. The fantastic Fitbit ecosystem has a parent and kid view allowing you to manage and track your kids important data, while your kid has access to a more simple version of the app to see their progress.
Kids are growing up faster than ever, particularly when it comes to technology and parents are increasingly anxious to have their kids adopt technology. It allows the parents to track cell phone even when you are not around them, all the information can be accessed from any location remotely. Tests in a home bedroom setting showed ApneaApp works efficiently at distances of up to 3 feet, in any sleeping position and even when the person is under a blanket. This feature lets you read all incoming and outgoing SMS messages, even if one deleted them. Call Recordings: The recording of each and every call is recorded by the hidden call recording feature of the cell phone spy app. You can easily visit the website and can go through the feature offered by this cell phone tracker app. Do you know of a great family plan that’s being offered right now? It is possible only when you once logged in for viewing those activities and check about it to know. No matter it is a government organization or a corporate organization workers are seen to witness various kind of bullying activities on their social media or by offensive emails sent by their co-workers.
Posting something offensive on the employee’s social media platform is also considered to as a case of cyberbullying. tech-review.org or messages or posting something unethical on any co-worker social media platform to harass your colleague by any way come under cyber bullying. Cyber bullying is considered to be the easiest task as compared to face to face bullying activity nowadays. The MIC will allow you to listen to all the conversation which will be useful to track the face to face bullying in the workspace. ONESPY, the best cell phone tracker app offers you the best features to free track cell phone. Sites such as Google will have free software available for download either on the Google Maps site, or in the Google Play store. You need to find out the quality spy software. Any spy app is a program that tracks, records, logs, and monitors the cell device it is installed or directed on.
However, make sure your device is connected to the internet. Internet History: The browsing history from official mobile phones can be traced with the help of a cell phone spy app. Call history: The history of all the calls with their direction are viewed on your control panel. The cell phone spy app will give you the whole album of media shared by an employee on your control panel. Contact Tracker: A cell phone spy will monitor all the contacts which your employee will save after installing the cell phone spy app. You can get the exact location of that person by simply installing this chrome extension. Only the best cell phone tracker app can help the parents in getting over the problems associated with the excessive use of cell phones. If you don’t find this satisfying, you can call the technical support team – in case you have software problems. A phone tracker software can be implemented in a way that works in hidden mode so that users won’t get to know that she or he is being tracked.


RUIJIE RG-AP710 Indoor Access Point MIMO 2x2.
The Ruijie AP710 is a cost effective 802.11ac access point with 2x2 MIMO and concurrent Dual-band design, data rate of upto 1.167Gbps.
Taking advantage of Ruijie hybrid management flexibility, customer can choose the Lifetime FREE Ruijie Cloud Management and Hardware Controller for varies fast-changing business needs.
No matter cloud or hardware-based controller, all integrated with advanced radio optimization, wireless roaming as well as secure authentication out-of-box. The entry AP710 with balanced performance perfect for small to medium office, retail chains and budget hotel for their indoor scenarios.
--- Technical Specifications ---
Basic Spec :
- Radio : Concurrent Dual-band
- Protocol : 802.11a/b/g/n/ac
- Operating Bands : 802.11b/g/n: 2.4GHz to 2.483GHz & 802.11a/n/ac: 5.150GHz to 5.350GHz
- Antenna : Built-in Omni-directional Antenna
- Antenna Gain : 2.4G: 3dBi & 5G: 3dBi
- Max Throughput : Maximum throughput of 2.4G : 300Mbps Maximum throughput per AP : 300Mbps
Ports : 1 10/100/1000BASE-T Ethernet uplink, Port LAN1 supports PoE, 1 Console Port
Power Supply : local power supply (DC 5V/3A) PoE (802.3af）
Maximum clients per AP : 256
BSSID capacity : 32
- IPv4 address : Static IP address or DHCP reservation
- IPv6 address : Manual or automatic configuration
- Multicast Multicast to unicast conversion
Management and Maintenance
- Network management : SNMP v1/v2C/v3, Telnet, TFTP, Web management
- Cloud AC management : Support
- FAT/FIT switching : Support
- Lock : Support
- LED Indicators : 1 LED indicator (red, green, blue, orange, and flashing modes, breathing flashing mode for smart device access, and the indicator can be switched off to enable silence mode).


We are able to design a complete power electronic system that is developed to fit the customer’s needs. This includes several aspects which affect the design like safety requirements, easy operability or EMI and noise emissions. Our systems are designed to work in your application, environmental influences like high ambient temperatures, dusty air, condensing water and so on are taken into account in order to build the system you require.
We can deliver everything for a complete power electronic system. This includes the power electronic stack, the enclosure, the control system and the software, as well as measurement interfaces, drivers and auxiliary circuitry. All components are developed in house and are geared to each other. This provides also the advantage that interfaces are well known and fit to each other.
Our product portfolio of complete systems comprises e.g. test benches for semiconductor stacks, power supplies for various ac , dc applications and custom made products.
The above shown converter was completely developed in-house including a custom power stack for extended switching frequency operation up to 20 kHz which is not covered by other available products.
Due to our experience in system design we can base new developments on several existing solutions for example various variants of existing power blocks or several measurement interfaces. Most of our components have a flexible design and can be adapted to new requirements instead of being completely new developed. This saves development time and increases reliability because the components are already well known.
Also we can design a new system from scratch based on your requirements. Additionally, we can offer support for defining requirements for your application due to our experience. Hence you get an optimal and cost-effective solution which fits your needs.
Once the system is defined we start with the selection of the required components and the development of custom parts and software. Every custom part is designed in-house regardless of whether it is a piece of metal or a printed circuit board with additional circuitry. Short communication channels and a flat hierarchy in our company lead to fast and effective design procedure.


|Parker's IQAN-MD3 is a master display unit that works with the expansion modules in IQAN control systems. The IQAN-MD3 is fully programmable for use in any machine application, as a graphical user interface and as a CAN gateway.|
The IQAN-MD3 is constructed to be weatherproof for outdoor use. The MD3 will display vehicle data and system information. The IQAN-MD3 has a 3.5” transflective TFT color display. There are five navigation buttons and four ’soft’ function buttons to make interaction with the control simple for the operator.
The unit is designed to be easily mounted in a vehicle dashboard or exterior control panel. The unit has two sealed and keyed Deutsch DTM 12 position connectors.
For time critical functions the MD3's sample rate can be set as low as 10 ms. The unit has a large internal memory for events and logging that is capable of storing 80,000 records.
The MD3 analog inputs accept 0-5V signals from input devices or sensors. These inputs can also be set up as on-off inputs. A digital output is available and may be used for alarm or alert signals.
The MD3 is connected to other units by two CAN busses. All CAN busses may be configured as ICP (IQAN CAN Protocol), SAE J1939 or Generic CAN. The unit supports RS232 for modem (remote diagnostic) connection and USB for communication with a PC.IQAN Catalogue


True Condenser Capsule
The A218P small diaphragm professional condenser microphone is
designed to offer versatility for both live and studio
recording applications. This microphone is a true condenser
microphone (not a cheap electrets) featuring an 18mm diameter
gold diaphragm capable of cardioid polar pattern.
The A218P also features a built-in 2-step low-cut filter (-3dB
@ 75Hz or 150Hz) and a 2-step pad (-10dB or -20dB). These
features make this microphone extremely useful in any studio
and on many different sources.
Each microphone includes hard
mount and windscreen.


August 22, 2016. Wilson, North Carolina
One the first day of harvest, workers take a break from pulling sweet potatoes from a field managed by Vick Family Farms. In all, the family has 1500 acres of sweet potato crops.
Vick Family Farms uses Greenlight provided broadband to monitor its tobacco drying barns as well as run its large sweet potato operation. If they lose the network due to recent legal suits brought by the telecom industry on the city of Wilson, who provides the fiber optic broadband, they may be unable to run the business with near the level of efficiency.
Greenlight Community Broadband is a fiber optic internet service provider owned by the city of Wilson, NC. Popular with residents for its reliability and speed, the city started offering the service to towns outside of its municipal limits before a court case brought by the telecom industry took away the city's ability to expand beyond its borders. Several businesses and residents who have come to rely on the utility fear for their livelihoods if the service is discontinued.


In speaking with folks running IoT stacks, which typically span several streaming and NoSQL technologies such as Kafka, Spark, Storm and Cassandra, it became apparent that they often struggle with understanding how an existing setup scales and performs with varying workloads.
So to address this, we enhanced our performance testing module to now offer IoT sensor emulation capabilities that allow you to test and understand end-user experience and platform behavior. The application profiles and characterizations that MityLytics derives are used as the basis for continuous performance optimizations/recommendations.
The MityLytics IoT test suite allows for end-to-end integration and performance testing of all components in the data pipeline such as Kafka, Storm/Spark, Hadoop and Cassandra shown in the IoT data pipeline figure above and understand infrastructure behavior.
To do so, MityLytics generates test loads with user defined characteristics such as:
- Message sizes
- Message volume
- Message rate
Messages can be generated using different stochastic models, which now makes it possible to:
- Profile and characterize data pipeline operations and performance to provide proactive remediation and ultimately automated performance management
- Identify hot spots in the data pipeline
- Identify weaknesses in the data pipeline with different rates of ingestion and processing
- Identify capacity constraints
- Report end-to-end message latencies
- Get system throughput
All the results are shown in easy-to-understand dashboards and tables.
Please contact us to learn more or to try this out for free.


TELECOM AND MEDIA
We Meet Competitive Intensity
We help telecommunications, media, and broadband clients meet the challenges of competitive intensity and rapid change
WorkStream Management Consultants have been involved in the telecommunications, media, and broadband sector and have witness the gradual growth from 2G to yet to come 5G and is prepared to meet the challenges.
We have a deep understanding of the industry’s past challenges and future opportunities
Our Industry Experience
A true business partner who has the power and plan to help you achieve your goals! >>>


Bluetooth 4.1 Earbud,Mini Wireless Headset In-Ear Earphone Earpiece headphone for apple iPhone 8 7 plus 6s 6s plus and Samsung Galaxy S7 S8 and Android Phones (Single right ear)
- COMFORTABLE WEARING: Ergonomic design, secure fit, no troublesome wires from tangling or around your neck. Super mini ultra lightweight, only 4g, start enjoy your wireless life with this new Bluetooth headphone.
- BLUETOOTH V4.1 WIRELESS TECHNOLOGY: It can connect with 2 different devices simultaneously, would connect automatically with a phone paired previously.Ergonomically shaped mini earpod provide long time comfortable wearing.
- GREAT BATTERY LIFE: The new and improved lithium polymer battery allows seamless enjoyment of music for up to 4 hours on a single charge and 100 hours of stand-by, only take 1.5 hours to fully charged, battery status displayed on IOS device.
- Compatible with Most Devices:Can be used with all Bluetooth enabled mobile phones such as iPhone X / 8s / 8s/6 / 6s / 6s Plus / 7 / 7 Plus, as well as iPad 2, 3, 4, Android, Samsung, Galaxy, Bluetooth enabled smartphones and devices.
- EASY TO USE: Compatible with most Bluetooth enabled devices, such as Apple iPhone, Android Samsung, etc., pairing up just take a few seconds.(NOTE: package only contains earphone for left ear).


Looking for the best portable Bluetooth speakers for your iPhone 6 Plus? Which is the best portable speakers for you? Take a few seconds and easily compare several top rated Bluetooth speakers for your iPhone 6 Plus.
DKnight Magicbox Ultra-Portable Wireless Bluetooth Speaker,Powerful Sound with build in Microphone, Works for Iphone, Ipad Mini, Ipad 4/3/2, Itouch, Blackberry, Nexus, Samsung and other Smart Phones and Mp3 Players [Upgraded with standard “Beep” sound prompts ] (Black)
New Features for the Upgraded Version Since 06/26/2015 – Upgraded to standard Micro USB charging port. – Added seperate volume control buttons. – Optimized the passive radiator for better bass and sound quality. – Upgraded to HD microphone and improved the phone call quality. – Upgraded to Gold Plated audio jack for better AUX in sound quality. DKnight MagicBox Bluetooth Speaker The DKnight… read more
Bluetooth Speaker ,CINEYO(TM) Ultra-Portable Wireless Bluetooth Speakers,Powerful Sound with build in Microphone, (BLACK)
The CINEYO MIni Bluetooth speaker offers great quality sound with Bluetooth 3.0 technology. It features two highly powerful 40mm total 6W acoustic drivers for excellent sound. With the ultra-compact size and the soft touch rubber design, it can be easily fitted into a backpack, suitcase, or a travel bag. The built-in 1000 mAh rechargeable battery enables an 8-10 hours of playtime on a single charge. This speaker… read more
Bluetooth Speakers, TaoTronics Portable Bluetooth Wireless Speaker (High Definition Audio, Built-in Microphone, NFC, 2x3W Acoustic Drivers, A2DP Profiling, 10 Hours Playtime)
Give you the best enjoy of the sound quality. Feel like the band is in the room with the TaoTronics TT-SK02 Portable Bluetooth Speaker. By using two high performance 3W acoustic drivers, feel the bass and the treble with a stereo that really plays the beat. Plus, the build-in microphone which makes it also available in your daily life.
Coosh CBT791B Portable Wireless Bluetooth 4.0 Extended Range Speaker with Built in Speakerphone, Rechargeable Battery (Black)
Share your music with this rocking Bluetooth 4.0 ultra-slick speaker with A2DP, HFP, HSP and EDR technology. Product supports the latest NFC technology.
Bluetooth Speaker, Portable Wireless Bluetooth Stereo Speaker with 2 X 3.5W Speaker Enhanced Bass Resonator, FM Radio, Built-in Mic,3.5 mm Audio Jack, support TF card/Micro SD card and USB input, up to 35ft Bluetooth Range, up to 8 Hours Playtime, support MP3, WAV, WMA, APE, FLAC format audio file（Solid Black)
The Portable Bluetooth Speaker offers high quality stereo sound enjoyment with portability. The 52mm, 5-watt speaker with enhanced bass resonator with self boosting amplier IC and a large speaker cavity deliver excellent sound. Specifications: It’s 7.9 X 2.2 X 3.2 inches and 0.8 pounds in weight. The Bluetooth device can be connected from 35 feet away. All formats of audio file from TF card/SD card and U… read more
Bluetooth Speakers TaoTronics Wireless Speaker Portable Speaker (Bluetooth 4.0, High Fidelity Audio, Built-in Microphone, LED Light, A2DP Profiling, 6 Hours Playtime)-Black
The TaoTronics TT-SK05 Bluetooth 4.0 Speaker with EDR is the quickest way to get the party started. Pair any smartphone or Bluetooth compatible audio device to enjoy big sound that will rock the house. Supporting all A2DP Bluetooth stereo devices, it’s never been easier to play high-fidelity stereo music out loud. Pair two devices at once and listen to music or make phone calls with ease. The built-in microphone… read more
UPDATED ! WITH STANDARD as VOICE COMMAND AND + mini SD Slot Meet your new most perfect music companion SoundPal Cube F1. Bring entertainment with you to any place in the house and even outdoors. -Pair your SoundPal Cube F1 within the 30 feet range with any Bluetooth enabled device; iPhone, iPad, Android, laptop, MP3 and MP4 players. -Connect it with any devices by using 3.5 mm AUX cable (included… read more
SoundBot® SB571 Bluetooth Wireless Speaker for 12 hrs Music Streaming & Hands-Free Calling w/ 6W + 6W 40mm Driver Speakerphone, Built-in Mic, 3.5mm Audio Port, Rechargeable Battery for Indoor & Outdoor Use
SoundBot® SB571 Bluetooth Wireless Speaker for 12 hrs Music Streaming & Hands-Free Calling w/ 6W + 6W 40mm Driver Speakerphone, Built-in Mic, 3.5mm Audio Port, Rechargeable Battery for Indoor & Outdoor Use Feature • Your versatile and reliable “go to” compact portable speaker – streams music wirelessly via bluetooth or via 3.5mm audio wire. • Premium 2 x 40mm speaker drivers for 6W+6W output with rich bass and … read more
[Best Outdoor&Shower Bluetooth Speaker Ever] Omaker M4 Portable Bluetooth 4.0 Speaker with 12 Hour Playtime for Outdoors/Shower (Army Green)
Omaker- Open your mind,we are the maker Omaker Bluetooth Shower Speaker- As simple as possible, but no simpler Fans are always pushing us to improve and we really appreciate that,this M4 will make you proud! Unique Appearence Unique Rugged Square Design,Support multiple perspectives. Small and lightweight;with the lanyard, fits easily into your bag or pocket for on the go use,just set your hands free, making… read more
The Grenade that blew the roof off! Start the party with ease! – Switch to the on position and search for BT Speaker. Within seconds of opening the box you’re ready to listen to music! – The speaker is almost out of battery power? Charge and play with no problems! – Listen to your favorite radio stations all on the same device! (charging cable acts as a antenna) Listen to your music LOUD and CLEAR!… read more


If you need a USB mic for recording podcasts, streaming, or tracking vocal parts, the Mackie EM-USB offers a quality sound for just this purpose. It also delivers a reliable and rugged design at a reasonable price, making it both a suitable entry-level product, and a solid choice to augment a podcaster's existing collection. This mic is presented here in a snazzy limited-edition white finish.
With its cardioid polar pattern, the mic rejects sound coming from behind the capsule to tamp down on pesky room ambience; this is a plus for many people who podcast from their home. All the accoutrements you need to get started are included. Mount the mic on the supplied desktop stand, plug the included USB cable to your computer, and you're good to go. As a significant bonus to the entry-level engineer, the EM-USB ships with a download for ProTools | First, Avid's entry into their industry-standard editing/mixing software. Also included is a software bundle containing Tracktion Waveform OEM and 23 high-quality plug-ins to get your recordings polished for broadcast.
Connects to Computers, Android, and iOS Devices
Get started right away, as this mic works directly with your computer. No separate interface or preamp is required. As a bonus, the EM-USB also works with Android and iOS devices, provided you bring your own powered USB 3 hub and device-appropriate adapter to the party.
Cardioid Polar Pattern for the Untreated Room
The microphone makes use of a directional cardioid polar pattern to minimize off-axis sound. This polar pattern naturally, yet effectively tamps down room tone and focuses the audio capture on what's directly in front of the mic, so everyone can clearly hear your voice.
Headphone Monitoring & Easy-to-Use Controls
With its built-in 3.5mm jack, the EM-USB allows you to monitor your audio right from the microphone itself. The controls couldn't be simpler: mic gain, headphone volume, and a handy mute button are all on hand, so you can get the perfect recording and monitoring level right from the mic itself.
Broadcast-Quality Audio Capture
The mic records audio at sample rates and resolutions up to 16-bit / 48 kHz, giving you the broadcast standard for media playback.
Handy Hardware Included
With an included tripod stand, mic mount, and USB cable, you can get up and running right away. Simply place the mic in the mount, attach the mount to the stand, and run the USB cable from EM-USB into your computer.


Panasonic KX-PRX120: Touch panel cordless home phone
Panasonic unviels its latest (KX-PRX120) Touch panel cordless home phone. This Panasonic KX-PRX120 digital cordless phone runs Android 4.0, Ice Cream Sandwich OS allows users to enjoy various options for communicating in addition to conventional voice communication via the landline.
Features Wi-Fi / Bluetooth interface on the handset. The Panasonic KX-PRX120 is available with an answering machine and has been designed to be lightweight, compact and easy to carry.
Panasonic KX-PRX120 Home Phone Features:
- 3.5 inch TFT colour LCD (HVGA) with capacitive multi touch screen
- Wi-Fi, Bluetooth, GPS
- 0.3M pixel Front Camera
- 1450mAh Li-ion Battery
- microSD / microSDHC Card Slot on Handset
- micro USB Charging Port
- Incoming/Outgoing Call Barring to help minimise unwanted or nuisance calls
- Caller ID, Caller ID memory
- Answering Machine (40min)
- Key Finder accessory (Optional)
- Up to 6 handsets (Optional handset or GAP supported DECT handset) can be registered


The Wi-fi Alliance, the trade group for responsible for the current wi-fi system, has agreed to a new Wi-fi standard called Wi-fi Direct which will allow wi-fi devices to communicate directly without having to go through a wi-fi hub. The potential uses of this technology are quite big as one can potentially perform Bluetooth functions to already existing wi-fi devices. Videos can be sent to TVs from the PC without having a physical connection between the two, or play ridiculous pranks on your neighbor’s equipment who still has an unsecured wi-fi connection. This revolutionary new technology may fulfill the technological dream of being able to control any electronic device remotely, at a touch of your fingertips.
The most excellent thing with this story: It will come as a software upgrade to already existing wi-fi devices and will come built-in with newer ones. Wi-fi Direct is expected to be out by mid-2010.
Thanks to Grim for the heads up.


OBIHAI, Google Voice, and our free
OBi200 VoIP phone adapter - 2015 Review
my trusty OBIHAI OBi200 VoIP phone adapter
OBIHAI OBi200 VoIP phone adapter
Last Updated: February 7, 2018
Review Summary: I highly recommend the
OBIHAI Obi200 VoIP phone adapter.
It works. When you combine the OBi200 with Google Voice, you get a FREE home
phone line that works just like a "regular" landline. We've been using
the OBi200 and Google Voice for our home phone for about a year (purchased
October 7, 2014), and
never had problems. The OBi200 works and is reliable, and the call quality
is crystal clear. We were paying Verizon $31.22 after tax per month for a basic
landline phone. Now our phone costs us nothing... nada... zilch. And we have
free long distance calling anywhere in the US. And with Google voice, all of
the add-on features like voice mail, call forwarding, etc, are free, whereas with Verizon we didn't have them because they would charge an additional
monthly fee for every single feature. If you want a free landline phone,
consider the OBi200 and Google Voice. My only complaint would be with myself
for not doing this sooner!
Background: My first experience with VoIP (voice-over-IP or
voice-over-internet) phone calls was several years ago when my father-in-law
called us when he was on a trip in China using some new-fangled technology
called Skype. The phone call quality was marginal at best and I was not at
all impressed. Then a few years ago my brother called us using a new service
called Google Voice. Again, the call quality was marginal and created my
impression that VoIP and/or Google Voice meant garbled/broken phone calls
that one had to strain to hear or could hardly understand. Fortunately, last
year I decided to give VoIP and Google Voice another chance. I was getting
really tired of paying Verizon over $30 a month for a home landline phone
that we really didn't use very much because we generally were using our cell
phones for phone calls. I'm not sure how exactly I heard about OBIHAI, but I
decided to get their OBi200 VoIP phone adapter and give it a try. The OBi200
was under $50 at Amazon which was less than what I'd pay Verizon in two
months. After setting up our new VoIP phone number, I still kept our Verizon
service for another two months just in case the VoIP phone didn't work out,
but after 2 months of solid reliable OBi200 phone service, I cancelled our
traditional Verizon landline service. The Verizon representative I spoke
with gave me the impression I wasn't the only person dropping their
traditional landline phone service...
my home office set up [OBIHAI OBi200 VoIP phone adapter middle left]
Works with Google Voice (which is FREE!)
OBi200 also works with other VoIP service providers like Anveo, Callcentric,
Localphone, VoIP.ms and a multitude of other SIP Internet phone services
Has One Phone Port
Supports T.38 faxing
Easy to Set Up
No monthly service free! OBIHAI service is FREE!
back of the OBIHAI OBi200 VoIP phone adapter
Setting up the OBi200 VoIP phone adapter and a new Google Voice phone
number was simple. Since then, I haven't touched the OBi200,
and I've never had a problem with it. It just works.
STEP 1) The OBi200 comes with the OBi200 device, a power supply, an ethernet
cable, and paper instructions. The first step is to hook up the device.
First, you plug your phone into the phone port. Second, you plug an ethernet
cable into the ethernet port and either your broadband internet router or
modem, Finally you connect the power supply to the power port. The front of
device has three simple lights. On the left is the Operational indicate that
lights solid green to show the device is powered and operational. In the
middle is the Data indicator that is normally green and then flashes when
there is data activity, and on the right is Phone indicate that is solid
green when your phone is ready and flashes when your phone is in use.
STEP 2) Next, you verify the device works by dialing a special OBiTALK test
phone number. Once you confirm it works, you can call other people on the
OBiTALK network, but most of us want to finish up and be able to use the
phone like a regular landline!
STEP 3) Next you go to obitalk.com and set up an OBiTALK account. The
website has easy to follow on-screen instructions that lead you through the
simple process. Once your device is registered and added to obitalk.com,
you're ready to connect the device to a Google Voice number or to another
VoIP service provider. Again, the website has easy to follow on-screen
instructions that lead you through the simple process.
GOOGLE VOICE: Google Voice is free. You can get a
phone number to use at
http://www.google.com/voice . Google Voice has all sorts of nice
features, all of which are free. Voice mail is very easy to set up. You can
also port your existing phone number over to Google Voice (there is a small
charge), but I would first set up a new number to try Google Voice and
confirm you like it. Once you know you're happy with it, you can port your
old number over and replace your new Google Voice number with your old
Voice update - I now also use a different separate free Google Voice number for my
cell phone service. I wrote a guide on
how to get a free Google
Voice number and also how to use Google Hangouts for your cell phone
service. For cell phone service, when you're not on wifi, you'll need some cellular data for
Hangouts to work so you can send and receive calls and text. You can get
free AT&T cellular data with a FreedomPop LTE sim. Yes, it's really free! Read my
FreedomPop LTE sim review.
About the only requirement for using the OBi200 is that you need a decent
broadband internet connection to insure high-quality calls. The download
speed isn't that important, and you don't need to pay for a lot of
bandwidth. We have the Cox Cable "Starter" Internet package with 5Mbps
download speed and it is more that sufficient.
Another nice thing about the OBi200 is that it does not require a computer.
It works entirely on its own, and it doesn't matter if your computer is
turned on or off.
It's like having a landline phone, but it's absolutely free (including long
distance). We've been using the device and service for
almost a year
almost three years as of May 2017! The
call quality is crystal clear. All the call we make and receive work. My
only gripe is that I didn't do this earlier!
The OBIHAI OBi200 VoIP phone adapter combined with Google Voice works. If
you're still paying for a landline phone, you should really try out the
buy the OBi200 phone adapter from Amazon
THE FUTURE OF (FREE) GOOGLE VOICE:
You might be hesitant to try the OBi200 because you aren't sure how long
Google Voice will be free, or will even be around. I would say this: Even if
Google Voice started charging and/or disappeared, OBi200 also works with
several other VoIP services. But I really doubt Google will drop Google
Voice. It doesn't cost much at all for them to run it, and it gives them a
foot hold into the phone service sector. I also don't think they'll start
charging for it any time soon. I think Google is more interested in growing
the number of subscribers than collecting a token fee from their existing
subscribers. Plus, once a company starts charging for phone service, they
have to start calculating and collecting all the federal, state, and local
taxes, which is no small matter. Plus when people start paying for something
they start expecting a level of customer service that isn't required for a
free service and that can get expensive. Just as I predict gmail will remain
free, so will Google Voice.
Comments / Questions / Feedback:
Comment by Mark on Thursday, March 23, 2017
I keep reading your stories and noticing how many of the same money
saving strategies we employ. Like you, Freedompop, Blu R1HD, refilling
toner cartridges and now the Obihai 200 with Google voice. The Obihai
service is what I wonder about this round. I have my GV# connected to
the OBI and also forwarded to my H2O traditional cell phone. If I try to
call my GV# FROM my H2O cell phone the call goes straight to Google
Voice Mail. I recreated this situation with another T-Mobile cell phone
and get the same results. This was not always the case and is something
that has changed in the last few months(<6). Wondering if you have a GV-Cell-OBI
combo like this and seen similar results. Mark
Reply by Steve (Cranial Borborygmus)
I am reminded of the saying, "Great minds think alike." Seriously though, I
do think the Obihai is a no-brainer for a free landline if one has high
speed internet. Now if only I could come up with a way to get free home high
speed internet! As for your question, I have a Google Voice number that rings
both my Obi200 and a cell phone that I have hangouts on. My phone plugged into
the Obi200 always rings. If I don't answer it, eventually it will go to Google
Voice voicemail. If I have any problems, it is that usually my cellphone with
Hangouts also rings right away, but sometimes it is delayed or doesn't ring.
Have you confirmed that the Google CHAT box on your Google Voice account is
checked? Also, I might be confused, but if you have your GV number forward to a
cellphone, and then you call from the cellphone it is forwarded to, I would
think it would get a busy signal and go to voicemail. That is, it makes sense
that maybe you can't call yourself. Do I understand this correctly?
Comment by Fred on Friday, May 12, 2017
I had Google Voice Voip for my house phone but got a notice, a few years
back that they were stopping Voip service through GV. I purchased
service through Phonepower since. If GV is working again for my home
phone, I'd like to know so I can save a few bucks.
Reply by Steve (Cranial Borborygmus)
Hi Fred, I think back in 2014 before I got my Obi200, there was talk of
Google Voice ending support for ObiHai, and maybe they even did for a while, but
then they worked out a deal, and Google Voice has been supporting Obihai ever
since. In any event, it's worked fine ever since I bought my Obi200 in 2014 and
set it up with a free Google Voice phone number. So I've had free home phone
service ever since (for almost three years now), and I was just talking on my
phone this morning. So as of today, everything still works! I'd definitely
recommend you get on and try it out.
Comment by Scooter on Wednesday, September 20, 2017
Hi Steve, Really glad to see you start a page for Google Voice services.
I've really enjoyed your FreedomPop information page.
I've been using GV since it was Grand Central. They were purchased by
Google to create Google Voice. I wanted to ditch my AT&T landline ($45 a
month) and finally did a couple of years ago using an Obi 200 with a
company called PhonePower. They have a deal for Obi users for $34.99 a
year. There are some usage limits with PhonePower but I don't use very
many minutes of outgoing calls each month. No limit on incoming calls. I
wanted to transfer my existing phone numbers directly to GV and
eliminate PhonePower, but Google would not let me port in my landline
numbers. They said something about you can only transfer in from a
mobile number. Do you know if that has changed.
Reply by Steve (Cranial Borborygmus)
Hi Scooter, Great comment and question! I don't know the history of Google
Voice, and didn't know it started as Grand Central and was acquired by Google.
Thanks for the history lesson! I also don't know anything about PhonePower, but
if you are paying them, it makes sense to port your number to Google Voice and
get your "landline" service with the Obi200 for free. As far as I know, Google
Voice only allows you to port in a traditional "mobile/cellular" phone number,
and not any number that it recognizes as a traditional landline number or a VOIP
number. There is a way to do it though, but it's a two step process. You need an
unlocked GSM cell phone and a T-Mobile pre-paid card. First you set up the
T-Mobile pre-paid card which comes with it's own number on your cell phone. Then
you port your landline or voip number to the T-Mobile account. It is now a
"cellular" number, and you can then port it to Google Voice. If you search on
Google, I think there are guides on how to do this. I checked and the T-Mobile
prepaid sim card is on sale for $10 (normally $25) with free shipping on T-Mobile.com.
So you have the cost of the T-Mobile sim card and then Google Voice charges $20
to port a number in, plus the whole process takes a couple extra days because of
the double port. So it isn't super easy, but I think it is possible. Good luck,
and let me know how it goes if you do it. Thanks!
Comment by Greg Brown on Thursday, December 28, 2017
Hi Steve, I have never owned an Obi but have been reading about peoples
experiences with them. The Obi110 was given a "end of life" status in
2016 so Obihai would no longer have to support it and users would have
to buy a newer model. I have never heard of a company doing that to its
products. Imagine a part breaking (and is no longer available) on your
1-6 year old car and having to buy another car! Maybe if that happens to
someone at Obihai they'll rethink their strategy. If not, the Obi200
will probably go through the same "end of life" soon. My question is:
Can the Google Voice number associated with the Obi device be rescued
from Obihai and used with another VOIP product? One user said he could
not get his GV number to work properly after cancelling his Obihai
account and disconnecting the Obi110 box. It acted like Obihai was
intercepting the incoming number and his phone would not ring and the
caller gets a "cannot complete the call" message.
Reply by Steve (Cranial Borborygmus)
Hi Greg, Good questions. Other companies also have "end of life" for their
products. I'm thinking of Microsoft Windows (95, XP, 7, etc) and also several HP
printers I have that they won't warranty anymore, and parts are no longer made
for them. So I think "end of life" just means that the product is pretty old and
the company is not going to provide service or continue to make parts or update
software. End of life doesn't mean that the product automatically stops
working... you can continue to use it as long as you want (though with software
it becomes more challenging), it's just that the company is not going to
continue to make replacement parts or continue to provide technical support.
Anyway, I'm happy with my Obi200 and have more than gotten my $50 bucks from it,
and will continue to use it until it doesn't work (sort of like Windows XP). If
I have to buy a new device every 8 years or so, I'm still ahead of the game.
I've got several old cell phones that are now essentially paperweights. They
still work, but not on today's systems (analog vs digital, 2G vs 3G vs 4G).
As for a Google Voice number, if you just log into your Google Voice account and
uncheck a box, it no longer forwards to the Obi device, as far as I know, so I
don't see how Obi can not release a GV number, since they don't control it. Hope
Reply by Greg
Hi Steve, thanks for the reply. So, timing is everything as far as when to
buy their products. I would hate to buy the Obi200 now and have it cut off
in less than 2 years. I think I'll wait for their new model to come out
seeing that the 200 is somewhat old now (by their measure.) I'll continue
using Google Voice without the Obi hardware (just mic and speakers) as I
have done for 3 years.
Reply by Steve (Cranial Borborygmus)
Hi Greg, If you already have a free phone line set-up that is working for
you, I can understand your hesitation. That said, I think the Obi200 series
will continue to work for quite a while, and I also don't think there is any
imminent "end of life" on the horizon for it since there is not a Obi300
series yet. As for the Obi100 series, as far as I know, they still work just
fine. ObiHai is just saying that if Google Voice makes any changes, they
won't make any new software updates for the Obi100 because of the "end of
life" for it.
For any readers who are currently paying for a landline, I continue to
recommend they switch over to get free service with the Obi200 and a Google
Voice number, since people will quickly make back their investment in the
Obi200 by no longer needing to pay a monthly phone service bill.
Comment by Ben on Wednesday, February 07, 2018
Great article! Thanks for the useful information!
* * * * * * * * * *


Facetek- Attendance Through KIOSK
Various kind of biometric are available to authenticate a person and capture the attendance. Every device is wrapped with its own set of pros and corns. Kiosk is one of the best devices among the all which includes lot of advantages. kiosk refers to a small, free-standing physical structure which is either used to display information or provide a service. Kiosk devices are broadly classified as
- Manned Kiosk device
- Unmanned Kiosk device
Unmanned Kiosk device are most popular since it includes lots of advantages. It serves with incorporation of digital essence. Unmanned digital kiosks are quite popular since it serves customers uninterruptedly without human supervision and saves time. Kiosk devices have taken simple and efficient form after lot of up gradation. Initially kiosk device resembled telephone booths. Later on it evolved with several different variations and now took the form of a simple device. Integration of technology allows kiosks to perform a wide range of functions, evolving into self-service kiosks. An interactive kiosk is a computer terminal that features specialized hardware and software which provides access to information and applications for communication, commerce, entertainment, or education. Interactive kiosks are usually placed at high foot traffic settings such as hotel check-in, shops lobbies, airports, retail sales check-out.
Noticing all this advantageous factors Facetek uses Employee Attendance Tracker with efficient technology of Face Recognition Based Attendance System. Facetek has implemented a simple and effective approach which is efficient and budget friendly to the clients. We believe in the concept of simplicity at its best. Hence we will adjust to your environment in a less budget. Employee Attendance Tracking will be done with the installation of simple kiosk device. Device implements Face Recognition Based Attendance System so that it avoids all the wrong practice like buddy punching in an efficient way.
Kiosk based device will be in the tab format and will be installed at the working premises. This will capture the face of an employee and track the attendance. The specialty of the kiosk device used by Facetek is that it will capture the attendance in a group. This will consume less timing and during the tough time of corona it is very much helpful because it will not allow the spreading of infection. Resource like sanitizer and hand wash are not at all needed.
Kiosk device will be attached to the software so that after capturing the attendance information will be passed to the software where the tabulation will be done automatically and it will be error free as well. Kiosk device will consume less space and this will not be expensive as well. Maintenance cost will be very less. Hygiene will be maintained since the device is not touched and accessed. Cleaning of the device is also easy. Staffs can handle it with less training.
Facetek will always ensure the maximum benefits to the user with minimum cost. We take care of everything right from installation of the device to maintaining it. We assure you that KIOSK device will be accurate, hygienic and user friendly.