... switch 3. For both 120V and 240 1000W Dimming Electronic Ballast (Both for HPS AND MH)1. Output ... switch3. For both 120V and 240V4. The dimming ballast can run for MH and HPS lamp5.The warranty ... AvailablePHYSICAL CHARACTERS1, Weight:6.5KG2, Max. Lamp distance from ballast 15.50m3, Operating temperature range: -30~+554, Dimension ... T C): 90°C 1000W 4-step Dimming electronic ballast (Both for HPS AND MH)