SEA801-Zigbee/SEA802-Zigbee
Please use the template and fill in all the data requested below!

**Device description**
Which device would you like to be supported in this plugin?
Manufacture - Saswell
Model - SEA801-Zigbee/SEA802-Zigbee
Type - Thermostatic Radiator valve

**Supported in Zigbee2MQTT?**
Is this device already supported by Zigbee2MQTT / zigbee-herdsman-converters? - Yes

**Device model / Exposes information**
Provide the device model (also known as [exposes information](https://www.zigbee2mqtt.io/information/exposes)) for this particular device, as published to `zigbee2mqtt/bridge/devices` by Zigbee2MQTT.

```json
battery_low, switch (state), lock (state), heating, climate (current_heating_setpoint, local_temperature, system_mode, local_temperature_calibration, away_mode), linkquality
```

sorry I don't know how to get the expose value as a json. I have just got the expose values as explained from the devices tab.

**Missing features/functionality**
I have recently started getting this error in the logs on Homebridge and therefore the "off, heat, and auto" switch will not show up when using the Home app to set the temperature. Another thing that I have noticed is that for some reason the thermostats will set themselves back to heat at 16 degrees without doing anything. When I look at the logs in Homebridge no message has been set so unsure why it resets. If there is any more information that anybody would like then please let me know and I can get that for you. Thank you all in advance for helping me on this.

```
Failed to setup switch for accessory Study Radiator from expose "{"features":[{"access":3,"description":"Enables/disables physical input on the device","name":"state","property":"child_lock","type":"binary","value_off":"UNLOCK","value_on":"LOCK"}],"type":"lock"}": Error: Required "lock_state" property not found for Lock.
```

**Suggested services and characteristics**
For each of the missing features, please mention to which HomeKit Services and Characteristics it should be mapped.
The [Homebridge Plugin Development documentation](https://developers.homebridge.io/) provides a nice overview of the standard HomeKit services and characteristics.
Note that some manufacturers also use custom services and characteristics (the Elgato Eve products for instance), which could also be mimicked if they have been reverse engineered.