This is a breakout board for the Red/Green illuminated rotary encoder. It breaks out all of the pins to standard, breadboard friendly, 0.1" headers. Simply solder an encoder down to the board and you're ready to add illuminated input to your next project. The breakout even has four holes to make it easy to mount. Project description, more information and ordering can be found at https://www.sparkfun.com/products/10954