What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Climate | system_mode, running_mode, occupied_heating_setpoint, unoccupied_heating_setpoint, local_temperature, pi_heating_demand | mode, running_mode, heating setpoint, unoccupied_heating_setpoint, room temperature, pi_heating_demand, schedule | settable |
| Open window state | open_window_state | — | read only |
| Vacation mode | vacation_mode | — | settable |
| Local temperature offset | local_temperature_offset | ºC · -10…10 | settable |
| Occupied heating default setpoint | occupied_heating_default_setpoint | ºC · 7…30 | settable |
| Remote temperature duration | remote_temperature_duration | s · 0…86400 | settable |
| Open window detect | open_window_detect | — | settable |
| Open window timeout | open_window_timeout | s · 0…86400 | settable |
| Open window detection periode | open_window_detection_periode | m · 1…180 | settable |
| Open window sensitivity | open_window_sensitivity | ºC · 1…30 | settable |
| Battery | battery | % · 0…100 | read only |
| Voltage | voltage | mV | read only |
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:
{
"occupied_heating_setpoint": 21,
"local_temperature": 20.5,
"system_mode": "heat",
"open_window_state": false,
"vacation_mode": false,
"local_temperature_offset": 0,
"occupied_heating_default_setpoint": 19,
"remote_temperature_duration": 43200,
"open_window_detect": false,
"open_window_timeout": 43200,
"open_window_detection_periode": 91,
"open_window_sensitivity": 16,
"battery": 87,
"voltage": 2950,
"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 '{"vacation_mode":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"open_window_detect":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.