RCWL-0516 is a technology that uses radar Doppler, microwave induction special module for detecting moving objects. High sensitivity, induction distance, high reliability, induction Angle is large, voltage supply range and other characteristics Widely used in all kinds of human body induction lighting and anti-theft alarm, etc. Wide fan operating voltagefrom 4.0 V to 28.0 V Compared to traditional infrared PIR sensor, penetration detection capability colour:Green Material:PC+metal Package Contents: 30 x Microwave Doppler Motion Detector 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.