This controller will run four (4) HID lights at 240 Volts - Maximum 4000 Watts. The only lighting controllers featuring industrial-grade ballast rated relays. 120 Volt accessory timed outlet to activate in-line fans to cool your lamps. 24 hour timer with 15 minute non-detachable setting tabs. Universal outlets allow total flexibility. Removable back panel makes controller easy to wire into your power system. On/Off switch that makes lamp replacement easy. Durable powder-coated steel chassis. 30 Amps input power/20 Amps output power/240 Volts/60 Hz./4000 watts. Patent No. D660,252.