Advance 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 1 100 W -40 Degrees F Min Starting Temp Ballast Factor 1 Frequency 60 Hz