We've got a high-powered infrared emitter board, and a super-sensitive infrared remote receiver board - but why buy two boards when you can pick up one that does both? This board is the Adafruit Infrared Tranceiver breakout, which can transmit and receiver 940nm remote control data in one handy solder-free package. Please Note: to make this board easy to use, we have both solder-able breakout pads and also a JST PH 4-pin cable. We often use JST PH cables for I2C but this board does not use I2C - the white wire is data from a microcontroller to be emitted over the IR LED, the green wire is demodulated IR remote signal data to a microcontroller. The black wire is ground, red wire is 3V~5V power and logic level.