Emergency light LED driver with DALI interface and automatic test function, suitable for LED modules with a forward voltage of 10 - 52 V, SELV for output voltage < 60 V DC, standby mode, DALI interface for controlled tests and monitoring (if the DALI bus is not connected, the device operates in self-test mode), rated operating time: 3 h, compatible with all dimmable and non-dimmable constant current LED drivers, automatic shutdown of the output (if the LED load is outside the permissible range), constant output power: 2.5 W, addressing function patented (EZ easy addressing), electronic multi-level charging system, optional connection options, batteries: high-temperature cells (NiMH batteries 4 Ah / 3.6 V), typ. power factor at 230 V / 50 Hz: 0.45, switch-on time: < 0.25 s from detection of the emergency event, Overvoltage protection: 320 V for 1 h, ambient temperature: -20...+45 °C, service life: 4 years with a maximum of 2 discharge cycles per year, mains voltage switching waves according to EN 60598-2-22