5mm IR Transmitter Receiver Pair

The 5mm IR Transmitter Receiver Pair is a widely used infrared communication and sensing solution consisting of one IR emitting diode (transmitter) and one IR receiving photodiode (receiver). The transmitter emits invisible infrared light, while the receiver detects reflected or direct infrared signals.

This IR pair is commonly used in obstacle avoidance robots, line-following robots, proximity sensing systems, object counters, remote control circuits, industrial automation, and various electronics projects. Due to its simple design and reliable operation, it is one of the most popular components for students, hobbyists, engineers, and IoT developers.

The compact 5mm package makes it easy to integrate into custom PCBs, breadboards, and embedded systems.

Key Features
High-quality infrared transmitter and receiver pair
5mm compact package design
Fast infrared signal transmission and reception
Low power consumption
Reliable object detection capability
Suitable for short-range communication
Easy integration with microcontrollers
Ideal for robotics and automation projects
Long operational life
Cost-effective sensing solution
Technical Specifications
IR Transmitter
Type: Infrared Emitting Diode (IR LED)
Wavelength: 940nm
Forward Voltage: 1.2V – 1.5V
Forward Current: 20mA Typical
Viewing Angle: Approximately 20°–40°
IR Receiver
Type: Infrared Photodiode / Phototransistor
Detection Wavelength: 940nm
Fast Response Time
High Sensitivity
Compact 5mm Package
Applications
Obstacle Detection Robots

Detect nearby objects for autonomous navigation.

Line Following Robots

Build educational and competition robots.

IR Communication Systems

Transmit and receive infrared signals between devices.

Object Counters

Count products moving on conveyor belts and production lines.

Automation Projects

Use for position sensing and object detection applications.

Remote Control Systems

Develop custom infrared remote control solutions.

Educational Projects

Learn about infrared technology and sensor interfacing.

How It Works

The IR transmitter continuously emits infrared light that is invisible to the human eye. When an object reflects the emitted infrared signal, the IR receiver detects the reflected light and generates a corresponding electrical response. This principle is widely used in obstacle detection and proximity sensing systems.

Package Includes
1 × 5mm IR Transmitter (IR LED)
1 × 5mm IR Receiver (Photodiode/Phototransistor)
Why Choose This IR Transmitter Receiver Pair?

The 5mm IR Transmitter Receiver Pair offers a simple, reliable, and affordable solution for infrared communication and sensing applications. Its compatibility with Arduino, ESP32, ESP8266, Raspberry Pi, and other development platforms makes it perfect for robotics, automation, IoT systems, and educational electronics projects.

Whether you are building a robot, designing an obstacle detection system, or experimenting with infrared communication, this IR pair provides dependable performance and easy integration.