The MLC-4 and MLC-8 Master Lighting Controllers are the best devices for controlling up to 8 HID lights from one time-clock or controller. You run 30 amp, 240 volt power into the MLC-4, or 40 amp on MLC-8, and all of the outlets are controlled by one 120 volt äóìtrigger cable.äó You can plug the äóìtrigger cableäó into a standard 24-hour timer or lighting controller. A quick way to use 4 or 8 lights on a single 240V outlet and one inexpensive timer.