Lutron Hi Lume 3D, Electronic, Fluorescent Ballast, Ballast Start Type Programmed/Rapid

Proprietary continuous dimming ballasts are only compatible with continuous dimming controls from the same manufacturer and series. They are most often used in fluorescent fixtures in lighting system retrofits or new construction lighting installations for large hospital, corporate, and university campuses. The ballasts and dimming controls interface precisely with each other, which makes them more reliable than other types of ballasts and dimming controls. These ballasts allow the fixture's light output to be adjusted from 100% light output all the way down to the ballasts' lowest light output setting.