A Processor-controlled ballast with xitec II inside and highest possible energy class CELMA EEI A1 BAT. It features noise-free precise control via DALI or DSI signal, switchDIM or corridorFUNCTION, nominal life-time up to 100000 hours and Multilamp management. It also features intelligent temperature guard, intelligent voltage guard, optimum filament heating in any dimmer setting, disconnection of filament heating from a dimming level of approximately 90% for maximum energy efficiency, corridorFUNCTION with ambient light control. It offers automatically triggered emergency lighting value in DC mode 15%, for emergency lighting systems as per EN 50172, automatic start after replacement of defective lamps and automatic shutdown if the lamp is faulty.