What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Water level | water_level | cm | read only |
| Out of service | out_of_service | — | read only |
| Filling | filling | % | read only |
| Temperature | temperature | °C | read only |
| Tank height | tank_height | cm · 0…450 | settable |
| Alarm min threshold | alarm_min_threshold | % · 0…100 | settable |
| Alarm max threshold | alarm_max_threshold | % · 0…100 | settable |
| Invert threshold | invert_threshold | — | settable |
| Measurment period | measurment_period | min · 0…3600 | 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:
{
"water_level": 0,
"out_of_service": false,
"filling": 0,
"temperature": 21.6,
"tank_height": 225,
"alarm_min_threshold": 50,
"alarm_max_threshold": 50,
"invert_threshold": false,
"measurment_period": 1800,
"battery": 87,
"voltage": 2950,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"invert_threshold":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.