About the Product
HC-SR501 Infrared PIR Motion Sensor Module
The HC-SR501 is a highly versatile infrared passive motion detection module, perfect for Arduino, Raspberry Pi, and other microcontroller projects. Operating on a wide voltage range of DC 4.5–20V, it features an adjustable delay time (5–18 seconds) for flexible integration into applications such as security systems, motion-activated lighting, human body sensor toys, and industrial automation.

Compact & Accurate Motion Detection
With a 32mm × 24mm compact PCB design and a <100° cone angle detection range, the HC-SR501 delivers reliable and precise motion sensing. It offers low power consumption (<50µA) and supports retriggerable (default) and non-retriggerable trigger modes for different project needs.

Key Specifications:

  • Operating Voltage: DC 4.5–20V

  • Quiescent Current: <50µA

  • Trigger Modes:

    • L – Non-retriggerable

    • H – Retriggerable (Default)

  • Delay Time: Adjustable, 5–18 seconds

  • Detection Angle: <100° cone

  • Lens Diameter: 23mm (default)

  • Board Size: 32mm × 24mm