SONOFF AirGuard TH SNZB-02DR2 Zigbee intelligent temperature and humidity sensor

Product detailed description

The Sonoff AirGuard TH SNZB-02DR2 is a smart ZigBee temperature and humidity sensor with a large 3.6" LCD display that shows real-time current conditions, daily maximum and minimum readings, and air comfort levels. It combines lab-level accuracy (±0.2°C / ±2% RH), advanced wireless connectivity, and energy-efficient battery operation in one compact device. With it, you always know if the room has a healthy microclimate - no guesswork, no assumptions, no unnecessary complications.

Clear and large 3.6" LCD display
The bright, high-contrast display is designed to make the most important data visible from a distance. Check temperature, humidity, minimum/maximum readings for the last 24 hours and a comfort graphic at a glance. No need to open the app or reach for your phone - the information is always at your fingertips, just when you need it.

Precision premium sensor - Sensirion SHT40
At the heart of the device is the Sensirion SHT40 professional sensor, which is renowned for its industrial and measurement applications. It provides extremely stable and reliable data, which translates into real benefits: better sleeping conditions, healthier air for children and protection of plants, food and wine from excessive humidity. This device measures accurately - because when it comes to comfort, there's no room for chance.

ZigBee 3.0 - intelligent automation without cables
Thanks to the ZigBee 3.0 connection, the sensor works stably, responds quickly and consumes minimum power. Once paired with the gateway, you can monitor data in the app, set alerts and create automations - such as turning on the humidifier when the air is too dry or ventilation when the humidity is too high. It's a smart home that takes care of your comfort before you even notice a problem.

History and data analysis
The AirGuard TH records measurements and presents them in clear graphs that allow you to track changes over time - down to the minute. Daily, weekly and multi-month statistics are available, as well as dew point and VPD information. This is a handy tool to help you better plan ventilation, heating or watering of plants and effectively prevent mould and excessive moisture.

Works with smart home system
The sensor integrates seamlessly with popular platforms and hubs: Sonoff, Home Assistant, Zigbee2MQTT, SmartThings, as well as voice assistants such as Alexa and Google Home, and the Matter Bridge environment. You can control the temperature with your voice, view data remotely, and turn on the device from anywhere. This gives you complete freedom and flexibility regardless of your chosen ecosystem.

Zoom mode - use without a gate
Don't have a ZigBee hub? No problem. In Proximity mode, you can connect directly to your smartphone via Bluetooth to check current parameters, calibrate the sensor, change °C/°F units or export data. It's the perfect solution for those who want to start with simple monitoring and only later expand the system to include automation.

Compact design and versatile use
With a slim case made of durable PC+ABS, powered by two AAA batteries and the ability to stand or hang, the AirGuard TH is suitable for literally anywhere - the bedroom, the kids' room, the greenhouse, the pantry, the basement, the warehouse or the office. The wide operating range (-20 °C to 60 °C, 5-95 % relative humidity) guarantees reliability in a variety of conditions. It's a small device that gives you great control over the comfort and safety of your environment every day.