Description
The HC-SR505 is a compact and reliable PIR motion sensor module based on advanced infrared technology.
Designed for ultra-low voltage operation, it’s ideal for battery-powered and space-constrained applications.
This sensor automatically detects human motion and outputs a high signal (3.3V) when triggered.
It remains high during continued movement and switches low once the delay time has passed with no further motion.
- Product: HC-SR505 Mini PIR Motion Sensor
- Type: Passive Infrared (PIR) Motion Detector Module
- Output: Digital (High 3.3V / Low 0V)
- Trigger Type: Repeatable trigger (default)
- Delay Time: ~8 seconds (±30%)
- Operating Voltage: 4.5V – 20V DC
- Quiescent Current: <50mA
- Induction Distance: Up to 3 metres
- Detection Angle: <100° cone
- Working Temp: -20°C to +80°C
- PCB Size: 23mm x 10mm
- Lens Diameter: 10mm
Key Features:
- Ultra-compact body – perfect for tight spaces
- Wide operating voltage range (4.5V – 20V DC)
- Low power consumption, ideal for battery use
- High sensitivity and reliable motion detection
- Simple digital output – HIGH when triggered, LOW after delay
- Works in repeatable trigger mode for extended detection while motion continues
What’s Included:
- 1 x HC-SR505 Mini PIR Motion Sensor Module
Great For:
- Arduino and Raspberry Pi motion detection projects
- DIY security systems and alarms
- Battery-powered automation and control systems
- Smart lighting or energy-saving applications
- Compact electronic builds and embedded systems
Usage Tips:
- Connect directly to digital input of your MCU (e.g. Arduino)
- Output remains high (3.3V) while movement is detected
- Delay resets with continuous movement
- Use in repeatable trigger mode for motion tracking
