The human presence sensor is a sensor that detects the presence of indoor people through millimeter wave radar technology. It can detect indoor human activities, sitting, breathing, and fretting. Smart linkage Tuya smart switches, lights, sockets, curtains and other equipment. Working temperature:0-60°C Working voltage:5V Working current:10-496ma Size:100x100x40mm The power supply mode:USB 5V/1A Communication protocol:WIFI 2.4GHZ Color:Black Shell material:ABS The weight of the 100g Detection distance:3 meters Detection angle:90° Millimeter wave radar 24G Detection level:human body movement Indicator light:Present: Red ,: Green Colour:Black Material:ABS Package Contents: 1x 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.