What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Temperature | temperature | °C | read only |
| Humidity | humidity | % | read only |
| CO₂ | co2 | ppm | read only |
| Battery | battery | % · 0…100 | read only |
| Temperature unit convert | temperature_unit_convert | celsius, fahrenheit | settable |
| Alarm switch | alarm_switch | — | settable |
| Charge status | charge_status | none, charging | read only |
| Reset co2 | reset_co2 | reset_co2 | settable |
| Screen sleep | screen_sleep | after_30s, after_1minute, after_2minutes, after_5minutes, after_10minutes, never_sleep | settable |
| Co2 alarm value | co2_alarm_value | ppm · 1000…10000 | settable |
| Co2 alarm | co2_alarm | — | 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:
{
"temperature": 21.6,
"humidity": 46.2,
"co2": 640,
"battery": 87,
"temperature_unit_convert": "celsius",
"alarm_switch": false,
"charge_status": "none",
"reset_co2": "reset_co2",
"screen_sleep": "after_30s",
"co2_alarm_value": 5500,
"co2_alarm": false,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"temperature_unit_convert":"fahrenheit"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"alarm_switch":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"screen_sleep":"after_1minute"}'
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: "Room too warm"
mode: single
triggers:
- trigger: numeric_state
entity_id: sensor.my_device_temperature
above: 26
for: "00:10:00"
actions:
- action: notify.notify
data:
message: "Temperature above 26 °C"
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.