Easily add float switches, water on the floor sensors, etc. to the APEX, AquaController 3 or AquaController 3 Pro. Simply plug the Breakout box's minidin 8 cable into the AquaController I/O port, and then attach the float switch, or water on the float switch wires to the quick connector terminals. No soldering or special tools required. - 5` Cable plugs into the I/O Connector of the controller. - Supports 2 Digital inputs on AC3 - Supports 4 Digital inputs on AC3Pro. - Supports 6 Digital inputs on PX 1000. - Quick Connect Terminals—no soldering required. - 2 Mounting Holes for easy installation.