This ultra-thin 38kHz universal infrared (IR) remote control features 21 keys and uses the NEC encoding format. It is compatible with a wide range of devices, including USB stereo systems, car MP3 players, lighting systems, digital photo frames, foot baths, microcontroller development boards, and learning kits.

The remote includes a precision 38kHz IR transmitter powered by a MOS integrated circuit. It follows the NEC transmission format, which consists of a leader code, 16-bit custom code, and 16-bit data code. A crystal oscillator sets the frequency, and the IR LEDs emit pulsed signals at 38kHz—ideal for most IR sensors designed to receive this frequency.