Check History Records - Records of motion or no motion status, as well as linkage logs, be presented in the history records of App to monitor the safety of your home in real time. Right Place, Right Convenience - By placing smart sensors in different locations, changes in different locations can be monitored. At the same time, it supports linkage with smart devices to protect every corner of the home. Easy Installation - You can anywhere you need it, without the need for installation or wiring, or choose to place it directly where you need it, which is simple and efficient. Customize Your Own Smart Scenarios - Seamless integration with smart home systems for automated responses to detected events. When Motion/No Motion Detected - When a person is detected, a real-time notification be sent to the mobile phone. Then, after is detected, a notification be sent also. Different smart linkages can be performed according to the two states, such as the smart light automatically turns on when there is human motion, and automatically turns off when no human motion. Real-time Alerts from APP Wide Detecting Range Scene Linkage Adds Convenience Scene Linkage Guards Security Size:71x25x19.7mm Battery: LR03-1.5V/AAAx2 (Alkaline battery)(Without batteries) Wi-Fi Standard: 2.4GHz Wi-Fi Frequency: IEEE 802.11b/g Standby Curent: 22uA Alarm Curent: less than equal 45mA Detect Angle: 128 Detect distance:less than equal 6 Meters Type:WiFi Due to different product batches, the appearance , which does not affect the use. Colour:White Material:Plastic Package Contents: 1 * Smart PIR Sensor(Without 2xAAA batteries)