What it exposes
| Feature | Property | Values | Control |
|---|---|---|---|
| Switch (alarm) | state_alarm | — | settable |
| Switch (siren) | state_siren | — | settable |
| Motion | occupancy | — | read only |
| Led brightness (alarm) | led_brightness_alarm | % · 0…100 | settable |
| Volume (alarm) | volume_alarm | % · 0…100 | settable |
| Sensitivity (alarm) | sensitivity_alarm | low, medium, high | settable |
| Alarm duration (alarm) | alarm_duration_alarm | s · 1…300 | settable |
| Alarm delay (alarm) | alarm_delay_alarm | s · 0…120 | 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:
{
"state_alarm": "ON",
"state_siren": "ON",
"occupancy": false,
"led_brightness_alarm": 50,
"volume_alarm": 50,
"sensitivity_alarm": "low",
"alarm_duration_alarm": 151,
"alarm_delay_alarm": 60,
"linkquality": 120
}
Send commands to zigbee2mqtt/my_device/set:
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_alarm":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_siren":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"sensitivity_alarm":"medium"}'
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: "Off at night"
mode: single
triggers:
- trigger: time
at: "23:30:00"
actions:
- action: switch.turn_off
target:
entity_id: switch.my_device_alarm
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.