IR LED Transmitter and Receiver Pair (5mm)

Overview

The IR LED Transmitter and Receiver Pair (5mm) is a compact infrared emitter and detector set designed for reliable IR communication, object detection, and obstacle sensing. This matched pair makes it easy to implement reflected IR sensing, proximity detection, and simple IR data links in hobbyist and professional projects.

Key Features

• Includes one 5mm IR transmitter LED (emitter) and one 5mm IR receiver LED (detector)
• Tuned to common infrared wavelengths used in remote controls and sensors for reduced ambient interference
• Low power consumption and fast response time for responsive sensing and communication
• Compact 5mm package allows easy placement on breadboards, perfboards, and PCBs
• High sensitivity receiver for reliable detection of reflected or transmitted IR signals

Applications

• Line-following and obstacle-avoidance robots
• IR remote control sender/receiver circuits
• Infrared data transmission experiments and short-range wireless links
• Proximity and object detection sensors for automation and security
• Educational electronics, prototypes, and DIY automation projects

Compatibility and Integration

The pair is highly compatible with popular microcontrollers such as Arduino, Raspberry Pi, and PIC. Use a current-limiting resistor for the transmitter LED and read the receiver output with an analog or digital input (or through a simple comparator) depending on your project needs.

Package Contents

• 1 x 5mm IR transmitter LED (emitter)
• 1 x 5mm IR receiver LED (detector)

Integration Tips

• Place the transmitter and receiver close and aligned when using direct transmission links; angle them slightly for reflective sensing configurations.
• Use a resistor to limit current to the transmitter LED; check your microcontroller GPIO current limits.
• If ambient IR noise is an issue, implement simple modulation (e.g., 38 kHz) and demodulation to improve reliability.
• Test the receiver output with a multimeter or oscilloscope to confirm signal amplitude and response during setup.

Why Choose This IR LED Pair

This 5mm IR LED Transmitter and Receiver Pair provides a reliable, low-cost solution for a wide range of sensing and IR communication tasks. Its small form factor and low power requirements make it perfect for embedded projects, student labs, and prototype builds where space and efficiency matter.

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