Custom devices (DiY) LYWSD03MMC
Model | LYWSD03MMC |
Vendor | Custom devices (DiY) |
Description | Xiaomi temperature & humidity sensor with custom firmware |
Exposes | temperature, humidity, battery, linkquality |
Picture | ![]() |
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 here. 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 of0
and with a with a maximum value of3
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 of0
and with a with a maximum value of3
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
.