e-Vision(TM) Electronic HID Ballast Ballast Start Type Pulse ANSI Code C130/M130 Metal Halide Ballast Bulb Type Number of Bulbs Supported 1 Max Bulb Watts 39 W Input Voltage 120/277V AC Input Watts 43 to 44W -4 Degrees F Min Starting Temp Ballast Factor 1 Frequency 50/60Hz