This controller will run four (4) HID lights at 120 V � maximum 4000 W. The only lighting controllers featuring industrial-grade ballast-rated relays. 120 V accessory timed outlet to activate in-line fans to cool your lamps. 24 hr timer with 15 min non-detachable setting tabs. Four (4) NEMA 5-20 outlets. Removable back panel makes controller easy to wire into your power system. On/Off switch makes lamp replacement easy. Durable powder-coated steel enclosure. 50 Amps input power/40 Amps output power/ 120 V/ 60 Hz/ 4000 W. US Patent D66,252.