The Sonoff SNZB-02WD is a Zigbee-powered smart sensor designed to monitor temperature and humidity in your home or workspace. It features a clear 2.2-inch LCD screen that allows you to check current environmental conditions at a glance without needing to open an app. Built from a durable PC+ABS blend, the device is compact, measuring 62.8 x 58.5 x 21.8 mm and weighing just 65.6 g, making it easy to place almost anywhere. This sensor is particularly useful for challenging environments thanks to its IP65 rating, which protects it from dust and water splashes. An internal waterproof breathable membrane ensures it can accurately sense conditions even in misty or highly humid areas. It tracks temperatures from -20°C to +60°C with a precision of ±0.2°C and measures humidity from 0% to 100% RH with ±2% accuracy, operating reliably at altitudes up to 2000 meters. Connecting via the Zigbee 3.0 protocol, it integrates with the eWeLink app and is compatible with hubs like the iHost, NSPanel Pro, and various ZBBridge or ZBDongle models. The unit is powered by a single CR2477 3V battery and comes with an orange lanyard, allowing you to hang it in a garage, greenhouse, or bathroom for convenient monitoring.