India IoT Shop 220V PIR Motion Sensor Switch Module Automatic IR Infrared Body Security Circuit and Motion Detector Electronic Hobby Kit

According to the Doppler effect, the activities of the surrounding environment sensor body. When a person or object enters the sensing range of activities, the switch will automatically energized until a stationary state or leave the range states, auto power off. With light control function, by default only work at night or under low light, normal (daylight or ambient light is relatively strong test case does not work properly, please note.) Partially penetrate non-metallic materials induction. Such as glass, wood, plastic. Less than 15cm may also penetrate walls induction. Suitable hidden installation, does not affect the appearance.