SR505 Mini PIR Motion Sensor Module
Detect human or animal presence in a compact form factor with the SR505 Mini PIR Motion Sensor Module. This sensor is a smaller alternative to the classic HC-SR501, making it perfect for projects where space is limited, such as small security devices, automated toys, or concealed interactive displays.
The SR505 works on the principle of Passive Infrared (PIR), detecting the infrared radiation emitted by warm bodies. When a person or animal moves within its detection range, the sensor’s output pin goes HIGH, providing a simple and effective trigger signal for your microcontroller.
With its low power consumption and high sensitivity, this miniature sensor is ideal for battery-powered applications. The 3-pin interface (VCC, OUT, GND) makes it incredibly easy to connect and use with Arduino, ESP32, Raspberry Pi, and other development boards.
Key Features:
- Model: SR505 / HW-456
- Sensing Principle: Passive Infrared (PIR)
- Compact Size: Miniature design for space-constrained projects
- Detection Range: Up to 3 meters
- Simple Output: Outputs a digital HIGH signal on motion detection
- Interface: Easy-to-use 3-pin header (Power, Ground, Signal)
- Low Power Consumption: Ideal for battery-operated devices
Applications:
The SR505 Mini PIR sensor is perfect for a wide range of applications, including miniature security alarms, automatic lighting control, motion-activated props and toys, and presence detection in smart home and IoT devices.
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