Function introduction: Real-time detection of whether someone exists, -motion detection (, breathing, etc.), motion detection detection of dynamic: This product uses advanced millimeter wave radar technology to accurately detect whether there are people in the area,whether they are moving or stationary. recognition and wide range perception subtle human or animal movements. in multiple people and sensors, the presence of people in the room can be accurately identified through intelligent algorithm. Conical detection range, applicable to room area of 6-25 meters, induction angle of 90 degrees. The diameter of human sensing range is about 3meter (installation height is 3meter, ground projection)Intelligent linkage: It can create intelligent scenes with Tuya switches, lamps, curtains and other intelligent products to achieve energy saving, environmental protection, security alarm and other functions. With other intelligent devices, it can realize automation and scene control. Make intelligent hardware respond faster and control moresmoothly. It can still be used even if the network is disconnected.Difference from human PIR infrared sensor: PIR infrared sensors can only detect human motion, but cannot detect when people are still, and the alarm is serious. The human presence sensor adopts the principle of radar microwave, and has the functions of human presence, human stillness, human -motion and human motion detection. : TuyaFeature: -motion Detect Human Motion DetectorSize: 100 x 100 x 35mmDetection signal: 24g millimeter wave radar input: 5v1aInstallation : flat / ceiling mountedCommunication protocol: WiFicolor:BlackMaterial:plasticPackage Contents:1 x Human Presence SensorOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.