... Power factor>0.99 4) 1000W Lighting Accessories --- HPS/ MH 1000 Watt Dimmable Ballast Hold FCC, CE, TUV certification approved Features:1) ... Operating Temp–30~+55 Celsius DegreeMax Lamp Distance from Ballast≤15 MetersMax Enclosure Temp90 Celsius DegreeInput Voltage100-265VACInput Frequency50Hz ... , rapid install and excellent energy saving. Lighting Accessories --- HPS/ MH 1000 Watt Dimmable Ballast