Description
Key Features of HC-SR501 Infrared PIR Motion Sensor Detector Module
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Detects human and animal motion using infrared radiation
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Passive Infrared (PIR) sensing technology
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Adjustable sensitivity and delay time
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Low power consumption design
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Digital output signal (HIGH/LOW)
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Wide operating voltage range
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Compact module with onboard components
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Reliable and stable performance
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Suitable for Arduino, ESP8266, ESP32, and Raspberry Pi
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | HC-SR501 / SR501 |
| Sensor Type | Infrared PIR Motion Sensor |
| Detection Method | Passive Infrared (PIR) |
| Output Type | Digital (HIGH/LOW) |
| Operating Voltage | 5V – 12V DC |
| Detection Range | Up to 7 meters (adjustable) |
| Detection Angle | ~120° |
| Adjustable Delay | Yes |
| Adjustable Sensitivity | Yes |
| Trigger Modes | Repeatable / Non-repeatable |
| Operating Temperature | -20°C to +80°C |
| Module Size | Compact PCB |
| Application | Motion Detection |
Compatibility & Integration
The HC-SR501 Infrared PIR Motion Sensor Detector Module is compatible with:
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Arduino UNO / Nano / Mega
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ESP8266 & ESP32
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Raspberry Pi
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STM32 microcontrollers
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Home automation controllers
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Relay modules and alarm systems
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IoT development boards
The digital output makes it easy to connect directly to GPIO pins without additional signal conditioning.
Common Applications
The HC-SR501 Infrared PIR Motion Sensor Detector Module is widely used in:
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Motion-activated lighting systems
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Home and office security alarms
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Smart door and entry detection
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Automatic fan or appliance control
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IoT-based surveillance systems
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Energy-saving automation projects
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Educational electronics projects
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College and university lab experiments
Its reliability and adjustability make it a preferred choice for both beginners and professionals.
Ideal for Education & Training
This module is extensively used in:
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Engineering and polytechnic colleges
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Robotics and IoT workshops
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STEM education kits
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Smart home training projects
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Embedded systems learning programs
Students can easily understand motion detection concepts using the HC-SR501 Infrared PIR Motion Sensor Detector Module.
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