Zigbee2MQTT

Custom devices (DiY) LYWSD03MMC

ModelLYWSD03MMC
VendorCustom devices (DiY)
DescriptionXiaomi temperature & humidity sensor with custom firmware
Exposestemperature, humidity, battery, linkquality
PictureCustom devices (DiY) LYWSD03MMC

Notes

Originally this device does not support Zigbee (only Bluetooth). To use this device with Zigbee2MQTT a custom firmware has to be flashed which is explained hereopen in new window. This firmware converts the device from Bluetooth to Zigbee.

OTA updates

This device supports OTA updates, for more information see OTA updates.

Options

How to use device type specific configuration

  • temperature_precision: Number of digits after decimal point for temperature, takes into effect on next report of device. The value must be a number with a minimum value of 0 and with a with a maximum value of 3

  • temperature_calibration: Calibrates the temperature value (absolute offset), takes into effect on next report of device. The value must be a number.

  • humidity_precision: Number of digits after decimal point for humidity, takes into effect on next report of device. The value must be a number with a minimum value of 0 and with a with a maximum value of 3

  • humidity_calibration: Calibrates the humidity value (absolute offset), takes into effect on next report of device. The value must be a number.

Exposes

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 %.

Battery (numeric)

Remaining battery in %, can take up to 24 hours before reported.. 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 %.

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.