Sector 7, 0-10V Dimming Ballast, 1 Lamp For 25W Linear Or U-Bent T8, 120-277V, 50-60Hz, 9.5-InchCan. Sector 7, 0-10V Dimming Ballast, 1 Lamp For 25W Linear Or U-Bent T8, 120-277V, 50-60Hz, 9.5-InchCan.