The Sonoff SNZB-02M Zigbee AirGuard TH is a compact environmental sensor designed to keep you informed about your indoor climate. It monitors temperature, humidity, and atmospheric pressure with high precision, offering accuracy levels of ±0.2°C, ±2% RH, and ±0.1 hPa respectively. Beyond these basic readings, the device calculates the dew point and vapor pressure deficit, providing deeper insights into the air quality of your living space. Built with a white polycarbonate housing, this lightweight sensor weighs only 27.3 g and measures 45 x 45 x 17.6 mm, making it discreet enough to blend into any room. It connects via Zigbee 3.0 using a Silicon Labs EFR32MG22 chip, allowing you to integrate it into smart scenes for automated comfort alerts. You can easily place it wherever needed using the included adhesive mounting or the magnetic attachment. Powered by a CR2477 3V battery, the sensor is designed for long-term use with an expected battery life of over two years. Because it lacks a built-in display, it remains a minimalist addition to your home, sending all necessary data directly to your smart home hub for monitoring.