The ECS-2 Extension Cable Set is designed to connect Hydro-X to most LED drivers with a pigtail wiring. The ECS-2 comes with a 16 ft RJ12 cable, a Y-splitter and a special 4 ft RJ12 / 3.5mm jack cable. The special cable connects to your lighting fixture / LED driver using the two-screw terminal block to connect to loose wires on the LED driver. Simply connect the two wires from your LED driver to the terminal block, each of the lights being controlled are wired in a “daisy-chain” configuration back to the Hydro-X LMA adapter.