What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Soil moisture | soil_moisture | % | read only |
| Vpd | vpd | kPa | read only |
| Battery | battery | % · 0…100 | read only |
| Voltage | voltage | mV | read only |
| Low battery | battery_low | — | read only |
| Temperature | temperature | °C | read only |
| Humidity | humidity | % | read only |
| Illuminance | illuminance | lx | read only |
| Lux factor | lux_factor | 1…50 | settable |
| Reading interval | reading_interval | min · 1…360 | settable |
| Tx radio power | tx_radio_power | 4dbm, 19dbm | settable |
| Invert | invert | BW, WB | settable |
| Fastmode | fastmode | Fast, Ultra Fast | settable |
| Lower level | lower_level | % · 0…99 | settable |
| Upper level | upper_level | % · 1…100 | settable |
| Temperature compensation | temperature_compensation | — | 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:
{
"soil_moisture": 38,
"vpd": 0,
"battery": 87,
"voltage": 2950,
"battery_low": false,
"temperature": 21.6,
"humidity": 46.2,
"illuminance": 120,
"lux_factor": 26,
"reading_interval": 181,
"tx_radio_power": "4dbm",
"invert": "BW",
"fastmode": "Fast",
"lower_level": 50,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"tx_radio_power":"19dbm"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"invert":"WB"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"fastmode":"Ultra Fast"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"temperature_compensation":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: "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.