SHILLEHTEK HC-SR501 PIR Motion Sensor for Arduino Raspberry Pi

The ShillehTek HC-SR501 PIR Motion Sensor detects human movement by sensing changes in infrared heat, making it a simple and reliable way to add motion detection to Arduino and Raspberry Pi projects. It outputs a digital signal when motion is detected, so you can trigger lights, alarms, camera events, timers, or automation routines without complex processing. With onboard adjustments for sensitivity and delay time, it is easy to tune for hallways, rooms, entryways, and DIY security builds.