Features:  ZigBee temperature & humidity sensor can detect real-time temperature and humidity indoors. A ZigBee gateway (prepare by yourself) is required for using this product.  Compatible with 'SmartLife' APP, can be easily controlled by mobile APP. With alarm function, it's safer and more humanized for using.  It detects temperature and humidity once for every 5 minutes. It reports data to APP once for every 30 minutes, and reports at once if temperature has changed over ±0.6℃ or humidity has changed over ±6% RH.  Battery operated; push down the back cover to open. Mini size and concise appearance, portable and lightweight. Just place it on desktop or stick it to the surface.  Easy to use, can be widely used in living room, bedroom, baby room, office, warehouse, wine cellar, shop, restaurant and more indoor places.  Intelligent linkage scene: add more than one device in APP by turn, creating intelligent scene to control smart home more flexibly.    Specifications:  Color: White  Material: ABS  Technology: ZigBee  Working Frequency: 2.4GHz Wi-Fi  Quiescent Current: ≤10μA  Alarm Current: ≤15mA  Low Voltage and Undervoltage: ≤2.6V  Temperature Measuring Range: -10℃~60℃  Humidity Measuring Range: 0-95% RH  APP Download: Compatible with SmartLife  Power Supply: 2 * 1.5V AAA/ LR03 Battery (Not included)  Item Size: 68 * 23 * 18mm / 2.68 * 0.91 * 0.71in  Item Weight: 18g / 0.63oz  Package Size: 8.5 * 5.5 * 2.5cm / 3.35 * 2.17 * 0.98in  Package Weight: 29g / 1.02oz    Package List:  1 * Temperature & Humidity Sensor  1 * Double-sided Adhesive Tape  2 * Screw  2 * Hose  1 * User Manual (English)