Professional 1000 watt high frequency electronic ballast. Including high efficiency Miro aluminum horticultural HortiStar HR96 reflector (95% efficiency). Includes 1000 watt double ended EL lamp. Microprocessor controlled with electronic safety circuit. Very low heat dissipation and very low weight. Only suitable for use with 1000 watt double ended EL lamps: No acoustic resonance, more than 10% grow light compared to traditional lamps and light maintenance after 5000 hours >95%. Electronics by Gavita. Driver efficiency >95% and is adjustable to: 600/660/750/825/1150W. Sealed housing with Gore-Tex ventilation plug. Reflector is easily replaceable. Comes with 16 ft power cord. 906050 operates at 240 volts. 906089 operates at 277 volts. 906094 (special order) operates at 400 volts. 1 year warranty on the lamp.