The Chloride DEB Low profile Series fluorescent emergency ballast are designed to be field installed into a wide range of fluorescent luminaires. When AC power fails these units work in conjunction with the AC ballast to convert the fixture into an emergency lighitng fixture. DEB Series fluorescent ballast switches to emergency mode, keeping one or two lamps illuminated for a minimum of 90 minutes. These emergency ballast are compatible with electronic, standard, energy saving and dimming ballast.