Millimeter wave radar human presence sensor can be widely used in lighting, security, home appliances, hotels, garages, buildings, transportation, LOT IoT, and other industries that need to detect human body micro-movement, movement and control the detection distance. Intelligent Human Presence Detector: The human presence sensor uses millimeter wave radar to sense the movement and static presence of the human body, and can detect the tiniest movements, even breathing and heartbeat. Requires power from a USB 5V/1A TUYA Zigbee hub: wall bracket for mounting on a wall or wherever you need it. This ZigBee Human Presence Sensor requires the use of a TUYA ZigBee gateway, which acts as a central bridge for all TUYA ZigBee smart devices, with an extremely stable signal, making it a true necessity for whole-house intelligence, with support for zigbee2mqtt and home assistants. PLEASE NOTE:The presence sensor is a wired sensor and requires continuous power. ENERGY EFFICIENT: It can be used to detect not only moving people but also non-moving people. It enables seamless background functions such as kitchen lights turn on when you enter the room and turn off when you leave. APP REMOTE CONTROL: It detects macro/micro-movements allowing you to detect the presence of a person at a set distance and get alerts in real time via an APP. Please note:Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Type:Zigbee Colour:White Material:Plastic Package Contents: 1 * Human Presence Sensor 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.