HCSR501 PIR Motion Sensor Module Pyroelectric Infrared HCSR-501

Pyroelectric sensor for precise motion detection
Energy-efficient, suitable for home and commercial use
Works on 4.5 ~ 20V DC with low current
Adjustable delay (3s to 5min)
Ideal for security, lighting, energy-saving systems
Compatible with Arduino, Raspberry Pi, AVR, PIC, and 8051