1. It Can Support Mobile APP To Control The Intelligent Linkage Device Of Temperature And Humidity Sensor Through Zigbee Technology. The Temperature And Humidity Sensor Is Small In Size, Light In Weight, Easy To Use And Easy To Carry, Allowing Your Parents To Enjoy The Infinite Fun Brought By Smart Home!2. Intelligent Linkage Equipment, Real-Time Temperature And Humidity Change Perception3. Emergency Alarm Push For Abnormal Temperature And Humidity4. History Tracking5. Long Standby TimeProduct Name: Tuya Zigbee Temperature And Humidity SensorCommunication : ZigbeeBattery Power Supply: CR2450 Button BatteryWorking Temperature And Accuracy: -20-50.0.3Working Humidity And Accuracy: 0%-100%RH (Non-Condensing) 3%Different batches may have differences in product appearance, color, and printed characters, which will not affect the useColour:WhiteMaterial:ABSSize:40 x 13mmPackage Contents:1 x ZigBee Temperature And Humidity Sensor1 x Card Removal Pin1 x Adhesive Backing1 x English ManualOnly 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.