For conversion of fluorescent luminaires to emergency lighting use. Suitable for maintained and non-maintained circuits for T5, T8 and compact fluorescent lamps. May be installed with high frequency electronic ballasts (dedicated, multi-watt or dimmable) or conventional magnetic ballasts, for one or two lamps. Self test function. 3 hour duration from 7.0Ah battery pack. Green LED indicates charger in operation (LED may be remote mounted). Powers one lamp in the event of power failure in luminaires with twin lamps. Not suitable for luminaires using glow starters.