HC-SR505 Mini PIR Motion Sensor Module
The HC-SR505 Mini PIR Motion Sensor Module is a high-performance, compact, and energy-efficient sensor designed for reliable motion detection in a wide range of electronic and automation projects. Using passive infrared (PIR) technology, it accurately detects movement from warm objects such as humans and animals within its sensing range. When motion is detected, the module outputs a high signal, making it perfect for triggering alarms, automatic lighting, or smart home automation systems. Its small size and low power consumption make it an ideal choice for battery-powered and space-constrained applications.
How It Works
The HC-SR505 detects infrared radiation naturally emitted by warm bodies in its detection area. When a moving heat source enters its range, the sensor sends a digital high signal to the connected microcontroller or circuit. Its built-in fixed delay keeps the output high for 8 seconds after motion stops, ensuring stable operation and reducing false triggers. This module is factory-calibrated, eliminating the need for complex setup, making it beginner-friendly and ready to use right out of the box.
Key Features
Ultra-compact and lightweight design for easy integration.
Wide detection range of up to 3 meters.
Low power consumption – ideal for portable or battery-powered devices.
Factory-calibrated for plug-and-play functionality.
Fast and accurate response time for real-time motion sensing.
Simple single signal output for hassle-free connections.
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 4.5V – 20V |
| Detection Distance | 0 – 3 meters |
| Output Voltage | High 3.3V |
| Output Delay Time | 8 seconds (fixed) – |
| Working Temperature | -20°C to +80°C |
| Dimensions | 10mm × 23mm |
Pin Configuration
VCC – Power supply input (4.5V–20V)
OUT – Digital output signal (High when motion is detected)
GND – Ground connection
Applications
Motion-activated lighting control systems.
Smart home security and intrusion alarms.
Human presence detection in appliances and devices.
Energy-saving automation for homes and offices.
Robotics, IoT, and AI-based motion sensing projects.
