Smart Door Window Sensor is compact and lightweight, very suitable for installing in door or window of your house to provide home security. With high sensitivity and quick response, it will push alarm notifications to the smart APP when the door/ window opens or closes.Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Type: Type 1 (Wi-Fi)/ Type 2 (ZigBee) -- OptionalColor: WhiteMaterial: ABSMagnetic Control Distance: 15mmWi-Fi: 2.4GHz, 802.11 b/ g/ nAPP Download: Compatible with Tuya Smart/ Smart LifePower Supply: 2 * 1.5V AAA/ LR03 Battery (Not included)Low-voltage Indication: 2.4VWorking Temperature: -10~50Working Humidity: 95% RHItem Size: 70 * 25 * 20mm / 2.76 * 0.98 * 0.79in, 40 * 15 * 17mm / 1.57 * 0.59 * 0.67inItem Weight: 30g / 1.05ozPackage Size: 8.5 * 5.5 * 2.5cm / 3.35 * 2.17 * 0.98inPackage Weight: 41g / 1.45ozPackage List:1 * Smart Door Window Sensor1 * Double-sided Adhesive Tape2 * Screw2 * Hose1 * User Manual (English)