The 4 light controller operates up to 4000 Watts 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 Volt or 240 Volt cord sets. The controller is housed in a rust, dust and moisture proof enclosure. 30 Amps input power/20 Amps output power/240 Volts/60 Hz./4000 Watts.