SuperDim_Analog Dimming Ballasts (0-10 volt),120-277V, 50-60Hz * Ideal for T8, T5, T5HO, Quad T4-4Pin and multiple 4-Pin * Compatible with most 0-10volt manufactured controls* Programmed rapid start technology maximizes lamp life* End of lamp life Protection Circuit ensures safe operation* Below 10% THD at full bright* Applicable for variety wattage* UL & CSA listed