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Xiaomi QBKG03LM

Model	QBKG03LM
Vendor	Xiaomi
Description	Aqara double key wired wall switch without neutral wire. Doesn’t work as a router and doesn’t support power meter
Supports	release/hold, on/off, temperature
Picture

Notes

Pairing

Press and hold the button on the device for +- 10 seconds (until the blue light starts blinking and stops blinking), release and wait.

Device type specific configuration

How to use device type specific configuration

temperature_precision: Controls the precision of temperature values, e.g. 0, 1 or 2; default 2.
temperature_calibration: Allows to manually calibrate temperature values, e.g. 1 would add 1 degree to the temperature reported by the device; default 0.

Decoupled mode

Decoupled mode allows to turn wired switch into wireless button with separately controlled relay. This might be useful to assign some custom actions to buttons and control relay remotely. This command also allows to redefine which button controls which relay for double switch.

Special topics should be used:

zigbee2mqtt/[FRIENDLY_NAME]/system/set to modify operation mode.

Payload:

{
    "operation_mode": {
    "button": "single"|"left"|"right",
    "state": "VALUE"
    }
}

Values	Description
`control_relay`	Button directly controls relay (for single switch)
`control_left_relay`	Button directly controls left relay (for double switch)
`control_right_relay`	Button directly controls right relay (for double switch)
`decoupled`	Button doesn’t control any relay

zigbee2mqtt/[FRIENDLY_NAME]/system/get to read current mode.

Payload:

{
    "operation_mode": {
    "button": "single"|"left"|"right"
    }
}

Response will be sent to zigbee2mqtt/[FRIENDLY_NAME]:

{"operation_mode_right":"control_right_relay"}

Manual Home Assistant configuration

Although Home Assistant integration through MQTT discovery is preferred, manual integration is possbile with the following configuration:

switch:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_off: "OFF"
    payload_on: "ON"
    value_template: "{{ value_json.state_left }}"
    command_topic: "zigbee2mqtt/<FRIENDLY_NAME>/left/set"

switch:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_off: "OFF"
    payload_on: "ON"
    value_template: "{{ value_json.state_right }}"
    command_topic: "zigbee2mqtt/<FRIENDLY_NAME>/right/set"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    icon: "mdi:toggle-switch"
    value_template: "{{ value_json.click }}"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    unit_of_measurement: "°C"
    device_class: "temperature"
    value_template: "{{ value_json.temperature }}"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    unit_of_measurement: "-"
    value_template: "{{ value_json.linkquality }}"

zigbee2mqtt.io