SONOFF SNZB-02D

Model	SNZB-02D
Vendor	SONOFF
Description	Temperature and humidity sensor with screen
Exposes	battery, temperature, humidity, linkquality
Picture

Notes

Troubleshoot

In case the sensor got stucked and will not send (correct) data anymore, try the following steps to restore it.

1. Force remove the device via the frontend
2. Restart Zigbee2MQTT
3. Re-pair the device

Battery

Uses a CR2450 battery

Pairing

Long press the pairing button for five seconds. The signal indicator on the display will begin to blink when in pairing mode.

Temperature display

Double click the pairing button to toggle the display between Celsius and Fahrenheit. This does not change the unit of the measured temperature value.

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

Exposes

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 %.

Temperature (numeric)

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 %.

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.