Hi-Lume® architectural electronic dimming ballast is designed to meet the most demanding lighting requirements. By providing industry leading performance with true full-range 100% to 1% fluorescent dimming, Hi-lume® ballasts enable you to provide the ideal visual environment for any application. Programmed rapid start design preheats lamp cathodes before applying full arc voltage. Lamps turn on to any dimmed level without flashing to full brightness. Low harmonic distortion throughout the entire dimming range maintains power quality. End-of-lamp-life protection circuitry ensures safe operation throughout entire lamp life cycle. Ultra-quiet operation.