Specifications: *Size: 100*100*35mm *Detection signal: 24g millimeter wave *Communication protocol: WiFi *Colour: black *Power input: 5v1a *Installation: flush mount/ceiling Package Contents:1*Sensor, 1*Charging cable, 1*Instructions Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. *【Communication protocol】 WiFi model, directly connected to WiFi, you can use the mobile phone app to check the status of the device. zigbee model needs to be linked through TUYA zigbee gateway to use. *【Accurate detection of motion】 Static human presence This product uses advanced millimetre wave technology to accurately detect whether there is someone in the area, whether moving or stationary *【Accurate identification and wide sensing range】 Subtle human or animal movement with built-in multi-person and precision sensors, through the MFA intelligent algorithm can accurately identify whether a room is occupied or not. Conical detection range for room areas of 6-25 square metres, sensing angle 90 degrees. Human body sensing range diameter about 2.98m (installation height 2.98m, ground projection) *【Intelligent Linkage】 Can be used with graffiti switches, lamps, curtains and other intelligent products to create intelligent scenes and achieve functions such as energy saving, environmental protection and security alarm. Together with other smart devices, it can achieve rich automation and scene control. Makes smart hardware more responsive and control more smoothly. It can still be used even if the network is disconnected. *【Difference with traditional human PIR sensor】. PIR infrared sensors can only detect human movement, not people at rest, and have serious false alarms. The human presence sensor uses the microwave principle and has human presence, human stillness, human micro-movement and human motion detection functions.