Non-maintained Emergency Lighting Supply Unit with manual testing, compatible with all electronic ballasts (dimmable and non-dimmable). It is designed with 5-pole technology, 4-pole lamp changeover and delayed power switching for the ballast. It offers high-frequency AC operation of the lamp. Designed with power control technology, ensures maximum emergency ballast lumen factors (EBLF) for all lamps. It gives gentle on the lamp thanks to preheated lamp start and permanent cathode heating in emer.