SONOFF AirGuard TH SNZB-02DR2 - Zigbee Temperature and Humidity Sensor, White, 2-Pack

The SONOFF AirGuard TH SNZB-02DR2 Zigbee Temperature and Humidity Sensor, 2-Pack contains two indoor sensors for monitoring temperature and relative humidity over Zigbee 3.0. Each sensor measures temperatures from −20 °C to 60 °C and humidity from 5% to 95% RH. Temperature accuracy is ±0.2 °C. A 3.6-inch LCD shows readings directly on the device, so conditions can be checked without opening the app. The display also shows recorded minimum and maximum readings, making changes over time visible at the sensor. The two units can monitor separate rooms or compare conditions at different points in a property.

Remote monitoring and climate-based automation are available through the eWeLink app and a compatible Zigbee gateway. Changes in temperature or humidity can trigger connected equipment such as humidifiers and air conditioners. The sensors are compatible with Amazon Alexa and Google Home; Home Assistant use is supported through Zigbee2MQTT or ZHA. Apple Home compatibility requires a Matter Bridge. Their indoor monitoring role suits locations including bedrooms, nurseries, offices, greenhouses, and wine cellars. Battery operation means the units do not need a wired power connection.

• PC + ABS housing: the case is made from polycarbonate and ABS.
• AAA alkaline battery type: batteries are not included.
• One-year stated battery life.
• Wall-mounted or desktop placement supports fixed or portable positioning.
• 2.4 GHz operating frequency.