Lutron Hi-Lume Electronic Fluorescent Dimming Ballast Fdb-4827-120-1 120V 50-60Hz .30A Rapid Start Continuous, flicker-free dimming from 100% to 1% Standard 3-wire line-voltage phase-control technology for consistent fixture-to-fixture dimming performance Operates a single (1-Lamp) 32-Watt T8 Lamp @ 120-Volt VAC Programmed rapid start design preheats lamp cathodes before applying full arc voltage Frequency of operation ensures that ballast does not interfere with infrared devices operating between 38 and 42 kHz