Advance Centium ICN-2S86 - (2) Lamp Fluorescent Ballast - F96T8/HO - 120/277 Volt - Programmed Start - 1.0 Ballast Factor Philips Advance IntelliVolt Centium Electronic Flourescent Ballast Reduces lighting costs by up to 20% when installed with modern, energy-efficient lamps IntelliVolt multiple-voltage technology enables operation from 120 to 277 volts, 50/60 Hz Optimizes fit for applications where long lamp life or frequent switching is required Delivers continuous silent, flicker-free operation