... step switch 3. For both 120V and 240 1000W Dimming Electronic Ballast (Both for HPS AND MH)1. Output different wattage: ... life: AvailablePHYSICAL CHARACTERS1, Weight:6.5KG2, Max. Lamp distance from ballast 15.50m3, Operating temperature range: -30~+554, Dimension (L ... *W *H): 370X180X105mm)5, Max case temperature (T C): 90°C 1000W 4-step Dimming electronic ballast (Both for HPS AND ...