Main Features: 2. Perceived Light Intensity for Smart&Scene Linkage Illuminance monitor in Tuya Smart APP enables its smart feature as smart scene linkage with other smart devices,especially your house lights to ON/OFF automatically as the brightness changes;Besides,you can intelligently linkage the sensor to other smart home devices for home automation. 3.Two Models Are Available The ceiling mount can be installed like a downlight, which can be powered directly by AC; the wall mount can be attached to the wall or wherever you need it. It's as light as a wireless hub, and it's powered by USB 5V. 4. Advanced New Design with Multiple Settings Set the sensitivity from 1-9 to your own need,together with minimum detect range as 0.00m and maximum as 9.5m for flexible detection demand.Meanwhile,it is designed with hold time set as 0-1500s and detection latency set as 0-10s to avoid irrelevant annoying movement and reduce false alarm rate. 5. ZigBee/BLuetooth Hub as Control Center Tuya ZigBee/BLuetooth gateway is required for this ZigBee/BLuetooth human presence sensor,performing as the center bridge for all Tuya ZigBee/BLuetooth smart devices with extremely stable signal and a really good necessity for whole-house intelligence.(note:Tuya ZigBee/BLuetooth hub is highly recommended for its wider compatibility than other hubs) Specifications: Network: ZigBee / Wifi / Bluetooth.Celling mount sensor input: 80-240VAC.Wall mount sensor input: USB 5V.Working temperature: -20~+70Sensitivity: 1-9(default 7)Wall mount sensor sensing distance: Max 9m(Default 6m).Celling mount sensor sensing radius: Max 7m(Default 5m).Illuminance Sensor: 0-2000 LUX.Target detection confirmation time:0.1sTarget disappearance delay time:2-1500s(Default 90S).Celling Mount Size: :61*H39 mmCelling Mount Opening Size: 53-58mmWall Mount Size: 58mm*58mm*11mm Package list: Human presence sensor*1User manual*1USB Cable*1Wall Mount Various Detection Functions 1. Fretting Detection: It can detect small movements such as tilting the head, waving, raising the hand, flicking the body, playing with the mobile phone, turning over the book, etc.2. Presence Detection:It can detect the human body in the stationary state.3.Motion Detection: It can detect walking, trotting, fast running, circling, jumping and other movements.4. Distance measurement: The target distance measurement function can accurately filter targets outside the area. Illuminance detection Detectable illuminance value Detection distance setting Adjustable Parameters Various parameters such as detection distance can be set through app. Instructions The debugging files of WiFi and ZigBee existers are consistent. Breathing human body detector detects the micro motion information of various objects in the surrounding environment through microwave to determine whether there is a person at present. That is, if the conditions for moving objects are met, it can be determined as manned. For example: family pets. In terms of algorithm, algorithm has been used to suppress the fluttering curtains and air conditioner vents, but it is not ruled out that this may interfere with the presence. In this case, actual testing is required.The top mounting is easier to detect "standing still, squatting still". For sitting still, the detection effect is slightly inferior to the wall mounting; However, more accurate detection can also be achieved by setting greater sensitivity and longer delay time than wall mounting. Wall mounting can detect sitting still, standing still and squatting still. Installation location and area *existing detection radius: 1 ~ 3M*fretting detection radius: 5 ~ 7M