Specification: 1. High-precision detection: Using advanced millimeter wave technology, it is not affected by weather conditions such as light, rain, snow, etc., and can accurately detect the presence of the human body with a low false alarm rate. 2. Real-time monitoring: 24-hour uninterrupted real-time monitoring of designated areas can be carried out to detect abnormalities and provide timely alarms to improve security effects. 3. Multi-target detection: It can detect multiple targets at the same time. It can detect static micro-movements of the human body such as breathing, scratching, lowering the head, dynamic human movement and moving distance detection. It can even detect static states such as people. Millimeter wave detection is accurate for sleep. It is suitable for families, Shopping malls, office buildings, communities and other places. 4. Intelligent linkage: Supports linkage with other smart home devices, such as lighting control, camera monitoring, etc., to achieve a and smarter security system and smart home device linkage experience. 5. Beautiful installation: The product design is simple and beautiful, and the ceiling-mounted installation does not occupy your home layout space, making it more beautiful and convenient! Input voltage: AC110V-240V (forced installation) Communication : ZIGBEE3.0 Millimeter wave transmit power: -4DBM Operating current: 20MA Working temperature: -10~55 Working humidity: relative humidity: Less than95%RH Installation : ceiling installation Barrel diameter: 65MM Material: abs colour: white Package Contents: 1 x Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.