PIR Motion Sensor (HC-SR501)

Step into the future of smart automation. The HC-SR501 Passive Infrared (PIR) Motion Sensor is an absolute necessity for any project requiring human or animal presence detection. Rather than emitting light or sound, this sensor passively detects the infrared heat signatures naturally radiated by moving bodies, instantly sending a HIGH digital signal to your microcontroller the moment someone enters the room.

As an IIT Bhubaneswar-incubated startup, XROBOTICS WORKS utilizes the PIR sensor extensively in our Smart Home and IoT Automation curriculums. It is the core hardware behind student-built intruder alarms, automated hallway lighting, and touchless smart doors deployed in PM Shri Labs. The module is highly customizable, featuring dual onboard potentiometers that allow you to dial in both the detection range (up to 7 meters) and the time delay (how long the signal stays HIGH after detection). Solderless and perfectly compatible with Arduino, ESP32, and Raspberry Pi, it is the ultimate plug-and-play module for composite skill lab security projects.