What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Setup | setup | — | read only |
| Climate | occupied_heating_setpoint, local_temperature, system_mode, preset | heating setpoint, room temperature, mode, preset | settable |
| Sensor | sensor | internal, external | settable |
| External temperature input | external_temperature_input | °C · 0…55 | settable |
| Calibrated | calibrated | — | read only |
| Calibrate | calibrate | calibrate | settable |
| Child lock | child_lock | — | settable |
| Open window detection | window_detection | — | settable |
| Window open | window_open | — | read only |
| Valve detection | valve_detection | — | settable |
| Valve alarm | valve_alarm | — | read only |
| Away preset temperature | away_preset_temperature | °C · -10…35 | settable |
| Voltage | voltage | mV | read only |
| Battery | battery | % · 0…100 | read only |
| Power outage count | power_outage_count | — | read only |
| Device temperature | device_temperature | °C | read only |
| Schedule | schedule | — | settable |
| Identify | identify | identify | settable |
MQTT: state and commands
Zigbee2MQTT publishes the device state to zigbee2mqtt/my_device (my_device is the name you give the device). An example message:
{
"setup": false,
"occupied_heating_setpoint": 21,
"local_temperature": 20.5,
"system_mode": "heat",
"sensor": "internal",
"external_temperature_input": 28,
"calibrated": false,
"calibrate": "calibrate",
"child_lock": false,
"window_detection": false,
"window_open": false,
"valve_detection": false,
"valve_alarm": false,
"away_preset_temperature": 13,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"occupied_heating_setpoint":21.5}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"system_mode":"heat"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"sensor":"external"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"child_lock":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"window_detection":true}'
Watch the topics live from the browser: MQTT client.
Home Assistant automation example
Zigbee2MQTT creates Home Assistant entities from the device name. If it is called my_device, an automation in automations.yaml can look like this:
- alias: "Cooler at night"
mode: single
triggers:
- trigger: time
at: "23:00:00"
actions:
- action: climate.set_temperature
target:
entity_id: climate.my_device
data:
temperature: 18
Check the YAML: YAML checker.
How to pair it
- In Zigbee2MQTT click Permit join.
- Put the device in pairing mode: usually a long press of the reset button (5–10 s) until the LED blinks; bulbs: switch the power off and on 5–6 times.
- Keep the device close to the coordinator or a router while pairing.
- Give it a clear name: MQTT topics and Home Assistant entities are built from it.
Exact procedure and model notes: the device page in the Zigbee2MQTT docs. No coordinator yet: coordinator picker.