Xiaomi LYWSD03MMC-z


Model	LYWSD03MMC-z
Vendor	Xiaomi
Description	Temperature and Humidity Monitor (pvxx/ZigbeeTLc)
Exposes	temperature, humidity, enable_display, temperature_display_mode, comfort_smiley, comfort_temperature_min, comfort_temperature_max, comfort_humidity_min, comfort_humidity_max, temperature_calibration, humidity_calibration, measurement_interval, battery, voltage
Picture

Notes

Go here (pvvx github) for the firmware file & instructions on how to flash

OTA updates

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

Options

How to use device type specific configuration

temperature_calibration: Calibrates the temperature value (absolute offset), takes into effect on next report of device. The value must be a number.
temperature_precision: Number of digits after decimal point for temperature, takes into effect on next report of device. This option can only decrease the precision, not increase it. 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.
humidity_precision: Number of digits after decimal point for humidity, takes into effect on next report of device. This option can only decrease the precision, not increase it. The value must be a number with a minimum value of 0 and with a with a maximum value of 3

Measured temperature value. Value can be found in the published state on the temperature property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"temperature": ""}. It's not possible to 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. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"humidity": ""}. It's not possible to write (/set) this value. The unit of this value is %.

Enable display (binary)

Whether to enable the device display.. Value can be found in the published state on the enable_display property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"enable_display": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"enable_display": NEW_VALUE}. If value equals true enable display is ON, if false OFF.

Temperature display mode (enum)

The unit of the temperature displayed on the device screen.. Value can be found in the published state on the temperature_display_mode property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"temperature_display_mode": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"temperature_display_mode": NEW_VALUE}. The possible values are: celsius, fahrenheit.

Comfort smiley (binary)

Whether to show a comfort indicator on the device screen.. Value can be found in the published state on the comfort_smiley property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"comfort_smiley": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"comfort_smiley": NEW_VALUE}. If value equals true comfort smiley is ON, if false OFF.

Comfort temperature min (numeric)

Minimum temperature that is considered comfortable (default 20.00°C).. Value can be found in the published state on the comfort_temperature_min property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"comfort_temperature_min": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"comfort_temperature_min": NEW_VALUE}. The minimal value is -50 and the maximum value is 120. The unit of this value is °C.

Comfort temperature max (numeric)

Maximum temperature that is considered comfortable (default 25.00°C).. Value can be found in the published state on the comfort_temperature_max property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"comfort_temperature_max": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"comfort_temperature_max": NEW_VALUE}. The minimal value is -50 and the maximum value is 120. The unit of this value is °C.

Comfort humidity min (numeric)

Minimum relative humidity that is considered comfortable (default 40.00%). Value can be found in the published state on the comfort_humidity_min property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"comfort_humidity_min": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"comfort_humidity_min": NEW_VALUE}. The minimal value is 0 and the maximum value is 100. The unit of this value is %.

Comfort humidity max (numeric)

Maximum relative humidity that is considered comfortable (default 60.00%).. Value can be found in the published state on the comfort_humidity_max property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"comfort_humidity_max": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"comfort_humidity_max": NEW_VALUE}. The minimal value is 0 and the maximum value is 100. The unit of this value is %.

Temperature calibration (numeric)

Offset to add/subtract to the reported temperature (default 0°C).. Value can be found in the published state on the temperature_calibration property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"temperature_calibration": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"temperature_calibration": NEW_VALUE}. The minimal value is -50 and the maximum value is 50. The unit of this value is °C.

Humidity calibration (numeric)

Offset to add/subtract to the reported relative humidity (default 0%).. Value can be found in the published state on the humidity_calibration property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"humidity_calibration": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"humidity_calibration": NEW_VALUE}. The minimal value is -50 and the maximum value is 50. The unit of this value is %.

Measurement interval (numeric)

Configure sensor measurement interval (default 10 seconds).. Value can be found in the published state on the measurement_interval property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"measurement_interval": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"measurement_interval": NEW_VALUE}. The minimal value is 3 and the maximum value is 30. The unit of this value is s.

Battery (numeric)

Remaining battery in %. Value can be found in the published state on the battery property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"battery": ""}. It's not possible to write (/set) this value. The minimal value is 0 and the maximum value is 100. The unit of this value is %.

Voltage (numeric)

Reported battery voltage in millivolts. Value can be found in the published state on the voltage property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"voltage": ""}. It's not possible to write (/set) this value. The unit of this value is mV.