1SET Smart Home Cutting-edge Technology Security Alarm System Seamless

This Zigbee senosr and detector can not work standalone without gateway. 100% Brand New and High Quality Advanced Motion SensorPIR detects human body or animals that are moving, 120 detection angle, 5m detection distance, can achieve real-time monitoring day or night. Emergency Alert Push FunctionWhen there is movement detected, the alert notifications will be pushed to your phone, be aware of what #39;s happening at home even when you #39;re away. History Records TrackingYou can track the history of sensor activities. Strong Performance amp; Ultra-long Standby TimeLong transmission distance, high sensitivity, and strong network signal. Ultra-long standby time. Powered by 1pcs CR2450 batteries(include), can last for about 18 months.