SONOFF AirGuard TH SNZB-02DR2 3.6'' LCD Zigbee Temperature and Humidity Sensor

The SONOFF AirGuard TH SNZB-02DR2 is a smart indoor climate monitor designed for precise temperature and humidity control, leveraging Zigbee automation. Its large 3.6'' LCD screen provides an at-a-glance view of real-time temperature in °C and humidity in %RH, along with 24-hour maximum and minimum values. This sensor is ideal for users seeking to optimize their home environment for comfort, air quality, or specific applications like greenhouses and nurseries, integrating seamlessly with the eWeLink app for advanced analytics.

Key features include the clear 3.6'' LCD display, which shows current temperature, humidity, and daily extremes, making it easy to read from a distance. Through the eWeLink app, users can access historical data for up to six months, presented as curves, and analyze dew point and Vapor Pressure Deficit (VPD) metrics. A unique function allows the sensor to display temperature readings from other compatible SONOFF Zigbee sensors connected to the same gateway, enabling room-to-room comparisons without needing to check multiple devices or your phone.

The SONOFF AirGuard TH SNZB-02DR2 operates within a wide temperature range of –20 to 60 °C with an accuracy of ±0.2 °C, and a humidity range of 5–95 % RH (non-condensing) with an accuracy of ±2 % RH. It is powered by two 1.5 V LR03 (AAA) batteries. The package includes the SNZB-02DR2 sensor itself. This device is compatible with SONOFF Zigbee gateways like the Zigbee Bridge Pro or ZBBridge-U, and can be integrated with platforms such as Home Assistant via Zigbee2MQTT. Its certifications include CE, FCC, and RoHS.

Designed for durability with a PC+ABS material construction, the SONOFF AirGuard TH SNZB-02DR2 is suitable for various applications, from living rooms and nurseries to offices, pantries, and workshops. It facilitates smart scenes for automated climate control, such as triggering humidifiers when humidity drops or activating ventilation systems. For those seeking a more compact option, the SONOFF SNZB-02P is available. The dimensions are 95 × 70 × 18.2 mm, and it weighs 99.3 g with batteries included.