Emergency Backup Ballast - Operates T8, T5, PL Type A lamps - 120-277V
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Specification grade fluorescent battery pack operates one or two lamps (4' or shorter) or one 8' lamp. Factory or field installed within fluorescent fixture ballast channel. Upon interruption of normal power, battery pack automatically strikes and operates at reduced light output, providing optimum glare-free illumination for 90 minutes.