What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Probe temperature warning | probe_temperature_warning | none, low, high | read only |
| Temperature warning | temperature_warning | none, low, high | read only |
| Humidity warning | humidity_warning | none, low, high | read only |
| Tds warning | tds_warning | none, high | read only |
| Ec warning | ec_warning | none, low, high | read only |
| Mode | mode | freshwater, seawater | settable |
| Battery | battery | % · 1…100 | read only |
| Probe temperature | probe_temperature | °C · -40…120 | read only |
| Temperature | temperature | °C | read only |
| Humidity | humidity | % | read only |
| Tds | tds | ppm · 0…13000 | read only |
| Salinity | salinity | ‰ · 0.1…50 | read only |
| Ec | ec | μS/cm · 0…20000 | read only |
| Sg | sg | 1000…1100 | read only |
| Sampling interval | sampling_interval | s · 5…1200 | settable |
| Probe temperature calibration | probe_temperature_calibration | °C · -2…2 | settable |
| Probe temperature v0 set | probe_temperature_v0_set | °C · -40…125 | settable |
| Probe temperature v1 set | probe_temperature_v1_set | °C · -40…125 | settable |
| Tds warning set | tds_warning_set | ppm · 0…13000 | settable |
| Ec v0 set | ec_v0_set | μS/cm · 0…20000 | settable |
| Ec v1 set | ec_v1_set | μS/cm · 0…20000 | settable |
| Temperature calibration | temperature_calibration | °C · -2…2 | settable |
| Temperature v0 set | temperature_v0_set | °C · -40…85 | settable |
| Temperature v1 set | temperature_v1_set | °C · -40…85 | settable |
| Humidity calibration | humidity_calibration | % · -10…10 | settable |
| Humidity v0 set | humidity_v0_set | % · 0…100 | settable |
| Humidity v1 set | humidity_v1_set | % · 0…100 | 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:
{
"probe_temperature_warning": "none",
"temperature_warning": "none",
"humidity_warning": "none",
"tds_warning": "none",
"ec_warning": "none",
"mode": "freshwater",
"battery": 87,
"probe_temperature": 40,
"temperature": 21.6,
"humidity": 46.2,
"tds": 6500,
"salinity": 25,
"ec": 10000,
"sg": 1050,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"mode":"seawater"}'
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.