HC SR501 PIR Motion Sensor Module Infrared Motion Detector

The HC-SR501 PIR Motion Sensor Module is a widely used, high-sensitivity sensor designed to detect human or animal movement using passive infrared (PIR) technology. It converts infrared radiation emitted by moving objects into electrical signals, making it ideal for motion-activated lighting, security systems, automation projects, and smart home devices.

This compact module is easy to integrate with microcontrollers like Arduino Uno, ESP32, or Raspberry Pi, providing reliable detection and adjustable output timing.

Key Features

• High-sensitivity PIR motion detection for humans and animals

• Adjustable detection range (3–7 meters)

• Adjustable time delay for motion output (0.3–300 seconds)

• Compact and easy-to-mount module with 3-pin interface

• Wide operating voltage range: 5V–20V DC

• Low power consumption, ideal for battery-powered systems

Specifications

• Sensor Type: Passive Infrared (PIR)

• Operating Voltage: 5V–20V DC

• Output: Digital HIGH when motion detected, LOW otherwise

• Detection Distance: 3–7 meters (adjustable)

• Detection Angle: Approximately 110°

• Time Delay: Adjustable 0.3–300 seconds

• Dimensions: Approx. 32 mm × 24 mm × 18 mm

Pin Description

• VCC: Power supply (5–20V DC)

• GND: Ground

• OUT: Digital output signal (HIGH when motion detected)