1000W Dimming Electronic Ballast (Both for HPS AND MH) 1. Output different wattage: 50%,75%,100% 2. Easy to adjust by a 3- step switch 3. For both 120V and 240V 4. The dimming ballast can run for MH and HPS lamp 5.The warranty is 3 years. 6. Color can be other solid color.