HC-SR501 Infrared PIR Motion Sensor Detector Module | PIR Motion Sensor

Description Key Features of HC-SR501 Infrared PIR Motion Sensor Detector Module Detects human and animal motion using infrared radiation Passive Infrared (PIR) sensing technology Adjustable sensitivity and delay time Low power consumption design Digital output signal (HIGH/LOW) Wide operating voltage range Compact module with onboard components Reliable and stable performance 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: Arduino UNO / Nano / Mega ESP8266 & ESP32 Raspberry Pi STM32 microcontrollers Home automation controllers Relay modules and alarm systems 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: Motion-activated lighting systems Home and office security alarms Smart door and entry detection Automatic fan or appliance control IoT-based surveillance systems Energy-saving automation projects Educational electronics projects 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: Engineering and polytechnic colleges Robotics and IoT workshops STEM education kits Smart home training projects Embedded systems learning programs Students can easily understand motion detection concepts using the HC-SR501 Infrared PIR Motion Sensor Detector Module.