The Master 4 by LTL Controls has the capability to run a maximum of (4) 1000W ballasts using 120V or 240V power. The safest way to control a 4 HID light setup, this controller includes a 120V trigger cable. The Master 4 by LTL Controls has the capability to run a maximum of (4) 1000W ballasts using 120V or 240V power. The safest way to control a 4 HID light setup, this controller includes a 120V trigger cable which can be connected to a 120V timing device.