HC-SR501 PIR Motion Sensor Module Blue
The HC-SR501 PIR motion sensor detects infrared motion from people or animals. Adjustable sensitivity and delay make it perfect for Arduino, alarms, lighting automation, and security systems. The blue version offers reliable detection and easy microcontroller integration.
The HC-SR501 PIR (Passive Infrared) Motion Sensor Module is a widely used and cost-effective motion detector that senses changes in infrared radiation to detect movement. This blue variant of the HC-SR501 offers the same core functionality as the standard module, with a stylish blue PCB.
The sensor features adjustable sensitivity and time delay, allowing you to customize detection range and response time based on your project’s needs. It outputs a digital HIGH signal when motion is detected and LOW when idle, making it easy to interface with Arduino, Raspberry Pi, ESP32, and other microcontrollers.
The HC-SR501 is ideal for building motion-activated lighting, alarms, automatic doors, and home automation systems.
Specifications:
Model: HC-SR501 (Blue PCB Version)
Operating Voltage: 4.5V – 20V DC
Detection Range: Up to 7 meters (adjustable)
Detection Angle: ~120° cone
Output Type: Digital (HIGH = motion detected, LOW = no motion)
Output Delay: Adjustable (0.3 – 200 seconds)
Trigger Modes:
Repeatable Trigger (L): Continuously triggered while motion is detected
Non-repeatable Trigger (H): One-time trigger until delay expires
Sensitivity Adjustment: Via onboard potentiometer
Time Delay Adjustment: Via onboard potentiometer
Operating Temperature: –15°C to +70°C
Size: ~32mm x 24mm x 18mm (with dome lens)
Weight: ~10g