Energy-efficient, flexible, long-lasting, and easy-to-install, Advance's Centium instant start electronic ballasts for 32 watt T8 fluorescent lamps represent an optimal solution for a broad range of commercial light fixture retrofit applications. These ballasts will deliver silent, flicker-free operation. These ballasts have the same wiring configuration and mounting dimensions as standard size ballasts (so they'll fit in the exact same footprint as the ballasts they are replacing), and use IntelliVolt? multiple-voltage technology (enabling operation from 120 to 277 volts, 50/60Hz with sustained variation of +- 10%). Centium ballasts are high power factor with 10% THD ballasts, making them ideal for utility programs with stringent power quality requirements. They are suitable for use in most office and meeting room light fixtures, and especially for frequent on/off applications (such as areas with lighting controlled by occupancy sensors).