What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Ec | ec | µS/cm · 0…20000 | read only |
| Fertility | fertility | normal, lower, low, middle, high, higher | read only |
| Humidity | humidity | % · 0…100 | read only |
| Temperature | temperature | °C · -10…60 | read only |
| Temperature f | temperature_f | °F · 14…140 | read only |
| Temperature sensitivity | temperature_sensitivity | °C · 0.3…1 | settable |
| Humidity sensitivity | humidity_sensitivity | % · 1…5 | settable |
| Temperature alarm | temperature_alarm | lower_alarm, upper_alarm, cancel | read only |
| Humidity alarm | humidity_alarm | lower_alarm, upper_alarm, cancel | read only |
| Max temperature alarm | max_temperature_alarm | °C · 0…60 | settable |
| Min temperature alarm | min_temperature_alarm | °C · 0…60 | settable |
| Max humidity alarm | max_humidity_alarm | % · 0…100 | settable |
| Min humidity alarm | min_humidity_alarm | % · 0…100 | settable |
| Battery state | battery_state | low, medium, high | read only |
| 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:
{
"ec": 10000,
"fertility": "normal",
"humidity": 46.2,
"temperature": 21.6,
"temperature_f": 77,
"temperature_sensitivity": 1,
"humidity_sensitivity": 3,
"temperature_alarm": "lower_alarm",
"humidity_alarm": "lower_alarm",
"max_temperature_alarm": 30,
"min_temperature_alarm": 30,
"max_humidity_alarm": 50,
"min_humidity_alarm": 50,
"battery_state": "low",
"linkquality": 120
}
The device only reports data and takes no commands.
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.