Non-maintained Emergency Lighting Supply Unit with DALI interface and automatic test function, 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 emergency mode. It has 5.5 min boost start for rapid heating of the lamp, more light in the start-up phase and optimum lamp life. It offers standard and high ballast lumen factor for 1-hour types. This unit comes with electronic multi-level charge system, “rest mode” function, addressing function, patented (“EZ easy addressing”) and EZ addressing tool can be supplied. It includes two-colour status display LED.