Aquatic Life Light Park Electronic Ballast Aquarium Lamp/Light, 150-watt Culls, ANSI CODE: M81, M142 C, 120V 50/60Hz This ballast is suitable for operation in ambient conditions not exceeding 55 degrees Celsius Suitable for Recessed Use - Do not install insulation within 3 Inch of ballast sides or above ballast in such a manner to entrap heat Input Current: 1.3A, Power Factor; 0.99, Harmonic Distortion; 9%, Output Waveform 150Hz, Square Wave Output Power - Constant, Electronic Shutdown Protection, Thermally Protected, Type ` Outdoor, Maximum Output Voltage 250V mms