What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Ntc temperature | ntc_temperature | °C | read only |
| Temperature | temperature | °C | read only |
| Humidity | humidity | % | read only |
| Ntc alarm | ntc_alarm | loweralarm, upperalarm, cancel | read only |
| Ntc temperature calibration | ntc_temperature_calibration | °C · -5…5 | settable |
| Temperature unit | temperature_unit | celsius, fahrenheit | settable |
| Temperature calibration | temperature_calibration | °C · -2…2 | settable |
| Humidity calibration | humidity_calibration | % · -30…30 | settable |
| Temperature sampling | temperature_sampling | s · 5…3600 | settable |
| Ntc high temp alarm threshold | ntc_high_temp_alarm_threshold | °C · -40…130 | settable |
| Ntc low temp alarm threshold | ntc_low_temp_alarm_threshold | °C · -40…130 | settable |
| Battery | battery | % · 0…100 | 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:
{
"ntc_temperature": 0,
"temperature": 21.6,
"humidity": 46.2,
"ntc_alarm": "loweralarm",
"ntc_temperature_calibration": 0,
"temperature_unit": "celsius",
"temperature_calibration": 0,
"humidity_calibration": 0,
"temperature_sampling": 1803,
"ntc_high_temp_alarm_threshold": 45,
"ntc_low_temp_alarm_threshold": 45,
"battery": 87,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"temperature_unit":"fahrenheit"}'
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.