Description
Product Overview
Enhance your security and automation projects with the **HC-SR501 PIR Motion Sensor Module**. This pyroelectric infrared sensor is the industry standard for detecting human motion. It works by sensing the infrared heat signatures emitted by moving bodies through its **white Fresnel lens dome**. Whether you are building an automatic hallway light, a burglar alarm, or a motion-activated robot, this module offers reliable detection and easy integration with Arduino and Raspberry Pi.
Key Features
- Wide Detection Angle: The distinct **white hexagonal Fresnel lens** effectively focuses infrared signals onto the sensor, providing a detection angle of approximately 100 degrees.
- Adjustable Settings: Features onboard potentiometers (located on the back) to adjust sensitivity (range) and time delay, giving you full control over how the sensor reacts.
- Versatile Trigger Modes: Supports both repeatable (H) and non-repeatable (L) trigger modes via a jumper setting.
- Easy Mounting: The green PCB includes two pre-drilled **mounting holes**, making it simple to secure inside enclosures or on chassis.
- Low Power Consumption: Ideal for battery-operated systems due to its low quiescent current.
Technical Specifications
- Model: HC-SR501
- Operating Voltage: 4.5V to 20V DC
- Output Voltage: 3.3V (High) / 0V (Low)
- Detection Range: Adjustable (approx. 3m to 7m)
- Lens Type: White Fresnel Dome
- Board Color: Green
Common Applications
- Automatic Lighting Systems
- Security and Burglar Alarms
- Industrial Automation and Control
- Motion-Activated Toys and Props
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