LumaPro(R) Magnetic HID Ballast Kit Ballast Start Type Pulse ANSI Code M132/M154 Metal Halide Ballast Bulb Type Number of Bulbs Supported 1 Max Bulb Watts 320 W Input Voltage 120/208/240/277/480V AC Input Watts 363 W -20 Degrees F Min Starting Temp Ballast Factor 0.97 Frequency 60 Hz