The 4 light controller operates up to 4000 W of grow lights in your garden. It features heavy-duty definite purpose contactor, trigger cord set that activates your lights via an external wall timer and universal outlets that allow the use of 120 V or 240 V cord sets. The controller is housed in a rust-, dust- and moisture-proof enclosure. 30 Amps input power/20 Amps output power/240 V/60 Hz/4000 W.