1. 400w HID electronic ballast, 2. compatible with MH and ... 20%. while giving you consistent color rendering. The HID electronic ballast offers one of the best warranties ... on the market 2 years. The HID electronic ballast wil turn on MH and HPS ... , 1000w ballast. MODELElectronic Ballast 400WLAMPPHILIPS, OSRAM, GE, SYLVANIA 400W MH and HPS lampTEST ENVIRONMENT: 230V/50Hz, TEMPRATURE: 25 ...