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An infrared (IR) LED is a light-emitting diode that emits infrared light, commonly used in remote control systems, proximity sensors, and security applications. IR LEDs operate at wavelengths invisible to the human eye but are detected by IR receivers like TSOP modules. These LEDs are widely used in automation, robotics, and communication devices. The IR LED has a fast switching speed and consumes low power. It is commonly paired with photodiodes to create infrared-based object detection and communication systems. It can be integrated with Arduino, Raspberry Pi, and other microcontroller-based projects.