Features: 2.4GHz Wifi One-key Connection. Do not need home gateway, you can achieve the intelligent control of home appliances, simple to use. Small and Compact Appearance. Reasonable size design, optimize the iunternal structure, which bring you convenience. Two Power Supply Modes. Mini USB supply and battery supply for you selection. Smartphone Remote Control. No matter how far away from home, the monitoring of home is in hands. Small Home Full Guard. Support multi-device controlled, enjoy your smart home with Wifi smart home devices. Ultra-bright red LEDs. It can continue to detect day and night with Advanced PIR technology, long-time continuous detect, more security. Advanced Motion Sensor. PIR detect people or animals that are moving. 7m detectiondistance, Whether day or night can be real-time monitoring. Large capacity, more durable. Simple to replace the batteries, service more intimate. Specifications: Battery: 1 pcs CR123A (Included) Standby time: 2 years Sensitivity distance: 7m Sensitive angle: 110° Standby current: 13uA Wireless Type: 2.4GHz Protocol: IEEE 802.11b/g/n Wifi distance: 45m Operating Temperature:0℃~60℃ (32°F~104°F) Operating Humidity: 20% ~ 85% Free app: Tuyasmart or Smart Life. Support systems: Android and IOS. Product size(D*W*H): 4.5 * 4.5 * 4.8cm/1.8*1.8*1.9in Package Weight: 92g/3.2oz Package List: 1 * PIR Sensor (Battery Included) 1 * Installation Kit 1 * User Manual .