EWeLink Zigbee3.0 Human Body Motion Sensor Wireless Smart Body Movement Mini PIR Motion Sensor Use With Ewelink Zigbee Gateway Description: This Zigbee senosr and detector can not work standalone without gateway. and 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's happening at home even when you're away. History Records TrackingYou can track the history of sensor activities. Strong Performance & 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 12 months. Specifications: Product Name:PIR Sensor Wireless Type:Zigbee Battery:CR2450 Sensor distance<6m Size:34*34*28mm Package Included: 1 * PIR Motion Sensor 1 * User Manual Notes: This Zigbee senosr and detector can not work standalone without gateway. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.