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Xiaomi WSDCGQ01LM #

Model	WSDCGQ01LM
Vendor	Xiaomi
Description	MiJia temperature & humidity sensor
Exposes	battery, temperature, humidity, voltage, linkquality
Picture

Notes #

Pairing #

Press and hold the reset button on the device for +- 5 seconds (until the blue light starts blinking). The reset button is the small button on the ‘top’ of the device. After this the device will automatically join.

Troubleshooting: device stops sending messages/disconnects from network #

Since Xiaomi devices do not fully comply to the Zigbee standard, it sometimes happens that they disconnect from the network. Most of the times this happens because of the following reasons:

• Device has a weak signal, you can see the signal quality in the published messages as linkquality. A linkquality < 20 is considered weak.
• Low battery voltage, this can even happen when the battery still appears full. Try a different battery.
• The device is connected through a router which cannot deal with Xiaomi devices. This is known to happen devices from: Centralite, General Electric, Iris, Ledvance, OSRAM, Sylvania, SmartThings, Securifi.

More detailed information about this can be found here.

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. To control the precision based on the temperature value set it to e.g. {30: 0, 10: 1}, when temperature >= 30 precision will be 0, when temperature >= 10 precision will be 1. Precision will take into affect with next report of device.

• temperature_calibration: Allows to manually calibrate temperature values, e.g. 1 would add 1 degree to the temperature reported by the device; default 0. Calibration will take into affect with next report of device.

• humidity_precision: Controls the precision of humidity values, e.g. 0, 1 or 2; default 2. To control the precision based on the humidity value set it to e.g. {80: 0, 10: 1}, when humidity >= 80 precision will be 0, when humidity >= 10 precision will be 1. Precision will take into affect with next report of device.

Exposes #

Battery (numeric) #

Remaining battery in %. Value can be found in the published state on the battery property. It’s not possible to read (/get) or write (/set) this value. The minimal value is 0 and the maximum value is 100. The unit of this value is %.

Temperature (numeric) #

Measured temperature value. Value can be found in the published state on the temperature property. It’s not possible to read (/get) or write (/set) this value. The unit of this value is °C.

Humidity (numeric) #

Measured relative humidity. Value can be found in the published state on the humidity property. It’s not possible to read (/get) or write (/set) this value. The unit of this value is %.

Voltage (numeric) #

Voltage of the battery in millivolts. Value can be found in the published state on the voltage property. It’s not possible to read (/get) or write (/set) this value. The unit of this value is mV.

Linkquality (numeric) #

Link quality (signal strength). Value can be found in the published state on the linkquality property. It’s not possible to read (/get) or write (/set) this value. The minimal value is 0 and the maximum value is 255. The unit of this value is lqi.

Manual Home Assistant configuration #

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

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.battery }}"
    unit_of_measurement: "%"
    device_class: "battery"
    state_class: "measurement"

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

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.humidity }}"
    unit_of_measurement: "%"
    device_class: "humidity"
    state_class: "measurement"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.voltage }}"
    unit_of_measurement: "mV"
    device_class: "voltage"
    enabled_by_default: false
    state_class: "measurement"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.linkquality }}"
    unit_of_measurement: "lqi"
    enabled_by_default: false
    icon: "mdi:signal"
    state_class: "measurement"