[Device] HEIMAN HS2WD-E Smart Siren
Hi there,

**Device description**
_Which device would you like to be supported in this plugin?_
The device is HEIMAN HS2WD-E Smart Siren, currently it appears in the z2m.dev supported devices but only the battery indicator.

**Supported in Zigbee2MQTT?**
_Is this device already supported by Zigbee2MQTT / zigbee-herdsman-converters?_
Yes, check [zigbee2mqtt dedicated entry](https://www.zigbee2mqtt.io/devices/HS2WD-E.html). I have been able to trigger the alarm from mqtt and also using the own zigbee2mqtt frontend web.


**Device model / Exposes information**
{"date_code":"2018.03.21","definition":{"description":"Smart siren","exposes":[{"access":1,"description":"Remaining battery in %","name":"battery","property":"battery","type":"numeric","unit":"%","value_max":100,"value_min":0},{"features":[{"access":2,"description":"Mode of the warning (sound effect)","name":"mode","property":"mode","type":"enum","values":["stop","burglar","fire","emergency","police_panic","fire_panic","emergency_panic"]},{"access":2,"description":"Sound level","name":"level","property":"level","type":"enum","values":["low","medium","high","very_high"]},{"access":2,"description":"Turn on/off the strobe (light) during warning","name":"strobe","property":"strobe","type":"binary","value_off":false,"value_on":true},{"access":2,"description":"Duration in seconds of the alarm","name":"duration","property":"duration","type":"numeric","unit":"s"}],"name":"warning","property":"warning","type":"composite"},{"access":1,"description":"Link quality (signal strength)","name":"linkquality","property":"linkquality","type":"numeric","unit":"lqi","value_max":255,"value_min":0}],"model":"HS2WD-E","supports_ota":false,"vendor":"HEIMAN"},"endpoints":{"1":{"bindings":[{"cluster":"genPowerCfg","target":{"endpoint":1,"ieee_address":"0x00124b0006100116","type":"endpoint"}}],"clusters":{"input":["genBasic","genPowerCfg","genIdentify","genGroups","genAlarms","ssIasZone","ssIasWd"],"output":["genIdentify","genOta"]},"configured_reportings":[{"attribute":"batteryPercentageRemaining","cluster":"genPowerCfg","maximum_report_interval":62000,"minimum_report_interval":3600,"reportable_change":0}]}},"friendly_name":"0x000d6f0016195fc2","ieee_address":"0x000d6f0016195fc2","interview_completed":true,"interviewing":false,"model_id":"WarningDevice","network_address":22304,"supported":true,"type":"Router"}]

**Missing features/functionality**
Currently the device appears as invalid, the missing functionalities are the ones related with the HomeKit security such as STAY_ARM, AWAY_ARM, NIGHT_ARM, DISARMED or ALARM_TRIGGERED.


**Suggested services and characteristics**
To work as Homekit alarm system with the already existing functionalities described above that will permit many users to configure in HomeKit this smart siren as part of the security system.

Thanks
Ware
