SONOFF AirGuard TH SNZB-02DR2 - Temperature and Humidity Sensor, White

The SONOFF AirGuard TH SNZB-02DR2 Zigbee LCD Temperature and Humidity Sensor is an indoor climate monitor that measures ambient temperature and humidity. Its temperature range is −20 to 60 °C, and it measures humidity from 5 to 95%. Temperature accuracy is specified as ±0.2 °C, useful when tracking small changes in room conditions. A 3.6-inch high-contrast LCD shows current readings on the device. It also displays 24-hour minimum and maximum values and a comfort index.

Through the eWeLink app, readings can be checked remotely and historical data is available for up to six months. The app also provides dew-point and VPD information. Compatibility includes SONOFF Zigbee hubs, Zigbee2MQTT, ZHA, Home Assistant, and SmartThings; Alexa and Google Home are supported, while Apple Home requires a Matter Bridge. Its white PC+ABS housing is intended for indoor placement in rooms such as bedrooms, offices, storage areas, and greenhouses. Zigbee 3.0 is used for smart-home communication, and Local Proximity Mode supports selected functions without a hub.

• Two replaceable AAA alkaline batteries are included; replace them when depleted.
• Rated battery life of up to one year.
• LCD battery-low indication helps identify when replacement is needed.
• Linked remote sensor readings can be displayed on the device.
• Smart-scene automation is supported.
• Dimensions of 95 × 70 × 18.2 mm.