RCWL-0515 is a microwave sensor module that uses Doppler radar technology to detect the movement of objects. Using 2.7G microwave signal detection, the module has the characteristics of high sensitivity, long sensing distance, strong reliability, large sensing angle and wide supply voltage range. Microwave induction is a type of induction mode without dead angle, based on the principle of Doppler radar. Its planar antenna emits electromagnetic waves and receives reflected echoes, which can effectively suppress the interference of high-order harmonics and other clutter; it is highly reliable, safe and convenient. Compared with infrared products: the microwave switch has a longer sensing distance, a wide angle, no dead zone, can penetrate glass and thin wood, and can penetrate walls of different thicknesses according to different power, and is not affected by environment, temperature, dust, etc. in 37 In the case of degrees, the sensing distance will not be shortened. Widely used in a variety of human body induction lighting and anti-theft and other occasions. Working voltage: 3-12V;Working current: 4mA;2.7G operating frequency;Reserved patch and in-line CDS interface;12m typical sensing range;Adjustable sensing distance;Lead-free process; Repetitive trigger time adjustable Color: Green Material: Metal+Plastic Package Contents: 10*detection module 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.