The Mini Infrared PIR Motion Sensor is a compact passive infrared (PIR) motion detection module designed to detect movement by sensing changes in infrared radiation emitted by humans, animals, and other warm objects. Its small size makes it ideal for Arduino projects, security systems, automatic lighting, robotics, and DIY motion detection applications.
Features
- Passive infrared motion detection
- Compact PCB design
- 3-pin interface
- Adjustable sensitivity and delay
- Low power consumption
- Digital output signal
- Easy to interface with microcontrollers
Specifications
| Specification |
Value |
| Product Type |
PIR Motion Sensor |
| Sensor Type |
Passive Infrared (PIR) |
| Operating Voltage |
Approx. 3.3–12V DC* |
| Output Type |
Digital |
| Output Level |
HIGH / LOW |
| Detection Range |
Approx. 3–5 m* |
| Detection Angle |
Approx. 100–120°* |
| Trigger Mode |
Adjustable* |
| Delay Time |
Adjustable* |
| Sensitivity |
Adjustable |
| Interface |
3-Pin |
| Mounting Type |
PCB |
*Actual specifications depend on the particular mini PIR module version.
Pin Configuration
| Pin |
Function |
| VCC |
Positive Power Supply |
| OUT |
Digital Motion Detection Output |
| GND |
Ground |
When motion is detected, the OUT pin changes to a HIGH state for a period determined by the module’s configuration.
Applications
- Automatic lighting systems
- Security alarms
- Motion-activated devices
- Arduino projects
- ESP32 projects
- Smart home systems
- Robotics
- Occupancy detection
- Energy-saving lighting
- DIY automation projects
Advantages
- Compact and lightweight
- Easy three-wire connection
- Low power consumption
- Adjustable detection parameters
- Simple digital interface
- Compatible with many microcontrollers
- Suitable for battery-powered projects
Package Includes
- 1 × Mini Infrared PIR Motion Sensor Module
Note: PIR sensors detect changes in infrared radiation, so they are primarily designed for detecting movement rather than continuously measuring distance or temperature. Allow the sensor to stabilize after power-up before relying on its output. Check the specific module’s voltage and timing specifications before connecting it to a microcontroller.
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