LumaPro(R), Magnetic, HID Ballast Kit, Ballast Start Type Pulse, ANSI Code S52, High Pressure Sodium Ballast Bulb Type, Number of Bulbs Supported 1, Max. Bulb Watts 1,000 W, Input Voltage 120/208/240/277/480V AC, Input Watts 1,102 W, -40 Degrees F Min. Starting Temp., Ballast Factor 0.97, Frequency 60 Hz