e-Vision(TM) Electronic HID Ballast Ballast Start Type Pulse ANSI Code C102/M102/C142/M142 Metal Halide Ballast Bulb Type Number of Bulbs Supported 1 Max Bulb Watts 150 W Input Voltage 120/277V AC Input Watts 161W -4 Degrees F Min Starting Temp Ballast Factor 1 Frequency 50/60Hz