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 to Female Barrel Cable. 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.