SONOFF AirGuard SNZB-02M Zigbee Smart Temperature and Humidity Sensor

SONOFF AirGuard SNZB-02M Temperature and Humidity Sensor Improve the conditions in your environment with the SONOFF AirGuard SNZB-02M smart sensor, which monitors temperature, humidity and atmospheric pressure. The device offers 5-in-1 measurements, including calculations of dew point and VPD, providing detailed information about the current indoor climate. Communication via Zigbee 3.0 allows you to integrate the sensor into your smart home system and create automated scenarios that respond to changes in environmental conditions. Comprehensive monitoring of environmental conditions
The SONOFF AirGuard SNZB-02M allows you to monitor key environmental parameters in real time. The sensor measures temperature, humidity and atmospheric pressure, and also calculates dew point and VPD values, providing a more comprehensive picture of indoor conditions. Monitoring atmospheric pressure also allows you to observe changes that may indicate shifts in weather conditions.

Accurate measurements and instant alerts High measurement accuracy enables even subtle changes in the environment to be detected. The sensor measures temperature to an accuracy of ±0.2 °C, humidity to an accuracy of ±2 % RH and pressure to an accuracy of ±0.1 hPa. Users can set their preferred temperature, humidity and pressure ranges and receive instant alerts in the app as soon as these limits are exceeded, enabling them to respond quickly to changing conditions.

Smart automation via Zigbee Thanks to its support for the Zigbee 3.0 standard, the sensor can connect to other smart home devices via a Zigbee hub. Based on current readings, you can create automated scenarios, such as switching on a fan, humidifier, air conditioner or window opener when specific conditions are detected. This solution allows you to automatically adapt the environment to your current needs.

Stable communication and long battery life Zigbee 3.0 wireless communication ensures stable operation with compatible devices and allows the sensor to be placed flexibly in any desired location. Powered by a single CR2477 battery, it provides over 2 years of operation, meaning the device does not require frequent battery replacement. Thanks to the absence of cables, the device can be installed in a wide variety of locations, such as on shelves, in corners, near windows or on the ceiling.

A wide range of uses in different rooms The SONOFF AirGuard SNZB-02M is ideal for any environment where monitoring indoor conditions is important. It can be used in the living room, children’s bedroom, bathroom or greenhouse, where it helps maintain suitable temperature and humidity levels. Thanks to its automation features, it can also help control devices responsible for ventilation, heating or humidity regulation.

Compact design and easy installation
Thanks to its small housing measuring 45 × 45 × 17.6 mm, the sensor can be placed in many locations without taking up much space. The device weighs 27.3 g including the battery and is made from PC plastic. The kit includes installation accessories such as a metal mounting plate, 3M double-sided adhesive tape and a fixing screw, allowing you to adapt the installation method to the chosen location. Package contents
SONOFF Temperature and Humidity Sensor CR2477 battery Metal mounting plate 3M double-sided adhesive tape Fixing screw Wrench User manual Manufacturer SONOFF Product range AirGuard Series Model SNZB-02M Wireless connection Zigbee 3.0 IEEE 802.15.4 Required accessories Zigbee hub Battery CR2477
Supply voltage 3.0 V ? Net weight 27.3 g (with battery) Housing material PC Colour White Dimensions 45 × 45 × 17.6 mm
Temperature measurement accuracy ±0.2 °C Humidity measurement accuracy ±2 % RH Pressure measurement accuracy ±0.1 hPa Operating pressure range 700–1100 hPa
Operating temperature: -20 °C to 60 °C Operating humidity: 5–95 % RH, non-condensing Operating environment: Indoor use Certifications: CE / FCC / RoHS