The Fulham High Horse H7-UNV-150HSC electronic MH ballast operates one lamp at 120/277 input volts. Ideal for use in normal light areas, this ballast is typically used in offices, board rooms, and retail spaces. This ballast is built with side leads to promote easy installation even when remote mounted. It uses a pulse start system, boasts active power factor correction, and will even shut down the circuit under abnormal operation to protect the system. UL listed for the outdoors and rated to operate with a case temperature of up to 185 degrees Fahrenheit, this unit is suitable for hot environments and is backed with a 3-year warranty.