1、The module has the characteristics of high sensitivity, far induction distance, strong reliability, large induction angle and wide range of power supply voltage. 2、Widely used in all kinds of human body induction lighting and burglar alarm and other occasions. 3、Wide voltage range from 4V to 28V which is suitable for most occasions. 4、Compared with traditional infrared induction RIP,it has stronger penetration detection ability. 5、It is stable and has great performance while using. Features: The module has the characteristics of high sensitivity, far induction distance, strong reliability, large induction angle and wide range of power supply voltage. Widely used in all kinds of human body induction lighting and burglar alarm and other occasions. Wide voltage range from 4V to 28V which is suitable for most occasions. Compared with traditional infrared induction RIP,it has stronger penetration detection ability. It is stable and has great performance while using. Specification: Working Voltage:4~28V Output: 3.3V Control Chip: RCWL-9196 Size:39*17mm/1.54*0.67in Package List: 2*Microwave Radar Sensor Module Users Manual: 1.Make sure no metal obstruction in front of the sensing surface. 2.Leave more than 1cm in front and rear sensing surface space. 3.The module carrier plane is installed into a flat line. 4.Must be used in effective detection area. 5.The module component side is the positive sensing surface and the reverse side is the negative sensing surface. Negative sensing surface sensing effect is poor. 6.Microwave components cannot be applied on a large scale in the same area, otherwise they will interfere with each other. The distance between individual individuals should be greater than 1 meter.