LTL Controls Master 4 Lighting Relay Controller, without Timer (120V & 240V Universal Plug)LTL Controls MASTER 4 Lighting Relay Controller (120V & 240V Universal Plug) without Timer Reliable Power Control for Your Grow Lighting Setup The LTL Controls MASTER 4 is designed for growers who demand safe, reliable, and straightforward control over their lighting systems. Built to handle up to four 1000W HID lights, the MASTER 4 simplifies your grow rooms lighting schedule with powerful relay driven control and universal 120V 240V plug