The IR Proximity Sensor Module is an infrared-based sensor used to detect nearby objects without physical contact. It consists of an IR LED transmitter and an IR receiver, which work together to detect reflected infrared light. The module features adjustable sensitivity and is widely used in Arduino, ESP32, ESP8266, Raspberry Pi, robotics, and automation projects.
Features
- Infrared obstacle detection
- Adjustable detection sensitivity
- Digital output signal
- Fast response time
- Built-in IR transmitter and receiver
- Power and detection status LEDs
- Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and STM32
- Compact PCB design
- Easy 3-pin interface
- Low power consumption
Specifications
| Specification | Value |
| Product Type | IR Proximity Sensor Module |
| Detection Principle | Infrared Reflection |
| Operating Voltage | 3.3V–5V DC |
| Output Type | Digital (DO) |
| Comparator IC | LM393 |
| Detection Distance | 2 cm – 30 cm (Adjustable) |
| Detection Angle | Approximately 35° |
| Sensitivity | Adjustable via Potentiometer |
| Indicator LEDs | Power & Detection |
| Operating Temperature | -20°C to +70°C |
Pin Configuration
| Pin | Function |
| VCC | 3.3V–5V Power Supply |
| GND | Ground |
| OUT | Digital Output |
Applications / Uses
- Obstacle avoidance robots
- Line-following robots
- Object detection systems
- Automatic door systems
- Industrial automation
- Smart parking systems
- Arduino and ESP32 projects
- DIY electronics projects
- Distance-triggered alarms
- Educational robotics
Advantages
- Contactless object detection
- Adjustable sensing distance
- Fast response time
- Low power consumption
- Easy microcontroller interfacing
- Compact and lightweight
- Reliable operation
- Beginner-friendly module
Package Includes
- 1 × IR Proximity Sensor Module
Note: The detection range depends on the object’s size, color, and surface reflectivity. Dark or matte objects may be detected at a shorter distance than light-colored or reflective objects. Use the onboard potentiometer to adjust the sensing range as needed.






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