Description
HC-SR501 PIR Motion Sensor Detector Module
The HC-SR501 PIR Motion Sensor Detector Module is a highly reliable passive infrared sensor module designed to detect human motion by sensing changes in infrared radiation. It features adjustable sensitivity and delay time, allowing flexible configuration for various applications. Operating on a wide voltage range and offering a digital output signal, this module is easy to interface with microcontrollers such as Arduino, Raspberry Pi, and other development boards. The HC-SR501 is widely used in security alarms, automatic lighting systems, motion-activated devices, energy-saving systems, and IoT projects.
| Specification | Details |
|---|---|
| Model | HC-SR501 |
| Sensor Type | PIR (Passive Infrared) |
| Operating Voltage | 5V – 20V DC |
| Output Type | Digital (High/Low) |
| Detection Distance | Up to 7 meters (Adjustable) |
| Detection Angle | Approximately 120° |
| Adjustments | Sensitivity & Time Delay (Potentiometers) |
| Mounting Type | PCB Mount / Module |
Applications
- Motion-based security alarm systems
- Automatic lighting and energy-saving systems
- Arduino and Raspberry Pi projects
- Home automation and IoT devices
- Motion-activated appliances
- Educational and DIY electronics projects
How to Use
- Connect VCC and GND to a suitable power supply.
- Connect the OUT pin to a microcontroller digital input.
- Adjust sensitivity and delay time using onboard potentiometers.
- Allow sensor to stabilize for initial warm-up.
- Test detection range and timing before final installation.
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