Function introduction: Real-time detection of whether someone exists, - (, breathing, etc.), 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 human or animal movements. Built in multiple people and precision 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 square , induction 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, , curtains and other intelligent 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 and control moresmoothly. It can still be used even if is disconnected. Difference from human PIR infrared sensor: PIR infrared sensors can only detect human motion, cannot detect when people are still, and the alarm is serious. The human presence sensor adopts the principle of radar , and has the functions of human presence, human stillness, human -motion and human . : Tuya Feature: -motion Detect Human Motion Detector Size: 100 x 100 x 35mm Detection signal: 24g millimeter wave radar Power input: 5v1a Installation : flat / ceiling mounted Communication protocol: ZigBee color:Black Material:plastic Package Conten: 1 x Human Presence Sensor Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.