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

The Sonoff AirGuard TH SNZB-02DR2 is an intelligent 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 laboratory-grade accuracy (±0.2°C / ±2% RH), advanced wireless connectivity, and energy-efficient battery operation in one compact device. With it, you always know if a room has a healthy microclimate - no guesswork, no assumptions, no unnecessary complications.

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

Precision premium sensor - Sensirion SHT40
At the heart of the device is the professional Sensirion SHT40 sensor, known for its industrial and measurement applications. It provides extremely stable and reliable readings, 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 is no room for chance.

ZigBee 3.0 - intelligent automation without wires
Thanks to ZigBee 3.0 connectivity, the sensor works stably, responds quickly and consumes a minimum of energy. 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 excessive. It's a smart home that takes care of your comfort before you even notice a problem.

Data history and 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 your 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 check 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.

Proximity mode - use even without a gateway
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 ideal solution for those who want to start with simple monitoring and only later expand the system with automation.

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