This is a custom designed breakout box designed to work with the Neptune Apex aquarium controllers. It contains three illuminated momentary switches, a toggle kill switch, and two external switch inputs (for use with float switches). Included is the breakout box, Y-power cable, mounting hardware, mounting template and instructions with example programming. I/0 Cable length is ~2.5 ft by default but can be configured up to 5.5 ft by request for a slight upcharge. Price is $120 plus $7.50 shipping in the USA. This is my personal unit attached to a PM2 (not included). The left toggle switch lights up only when in the ON position. The other three buttons are always on. Pictures of device and what is included.