Advanced Connectivity: Utilizes Zigbee protocol for reliable and efficient real-time data transmission to your smart home system. Accurate Weather Tracking: Measures temperature and humidity with high precision, ensuring you're always aware of your outdoor environment. Energy Efficient: Designed for longevity with extended battery life, reducing the need for frequent replacements. Compact and Durable: Small size allows for discreet placement outdoors, built to withstand various weather conditions. Battery type:cR2032 Temperature detection range:10°C~+55°C Humidity detection range:0%~95%RH Temperature detection accuracy:±0.5°C Humidity detection accuracy:±3% Wireless protocol:Zigbee 3.0 Need to be used with ZigBee gateway Due to different batches, there may be differences in product printed text, which will not affect use Colour:White Material:ABS Package Contents: 4 x Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.