1. 400w HID electronic ballast, 2. compatible with MH and HPS bulb 3. better heating with aluminum case. 4. power factor>0.98 The high frequency ... warranties on the market 2 years. The HID electronic ballast wil turn on MH and HPS lamps.We also supply 250w, 600w, 1000w ... 175V TO 265V, TEMPERATURE -10~60, INPUT POWER FLUCTUATE NOT MORE THAN 10W.** THE BALLAST WILL PROTECT ITSELF IF NO LAMP, SHORT ...