600 watt HID Electronic BallastRuns 3 Wattage off one 600 watt bulb! Flip switch to 600, 500, 400 watts!This ballasts have UL and CUL listed. It can run both HPS and MH bulbs, dual voltage: 120/240V. 3 years factory warranty.
Just 2 Standard computer power cord and standard sunlight supply socket fit this ballast.NO RESIN INSIDEBallast sold throughout the greenhouse industry brand new to hydroponics so take advatage of the quailty and price!Note second picture shows 1000/800/600 watt settings for example only this ballast has 600/500/400 watt settings.