Electronic Ballast with highest possible energy class CELMA EEI A2 BAT. It offers large temperature range, intelligent voltage guard, precise lamp operation using adjustment of lamp parameters, advanced SMART-Heating for minimum 50000 starts without replacement of lamps, constant luminous flux irrespective of fluctuations in mains voltage, designed for THD <10%, for luminaires of protection class I and protection class II. It features automatic start after replacement of defective lamps, safety shutdown of defective lamps and at end of lamp life (EOL 2), insulation displacement connection (IDC) terminal for rapid automatic or manual wiring and for emergency lighting systems as per EN 50172.