Multi-master application controller for controlling DALI1 and DALI2 electronic ballasts via the KNX bus, with DALI-2 motion/light sensor support and constant light control. Converts KNX switch/dim commands into DALI telegrams and DALI status/events back into KNX telegrams. Multi-master operation (EN 62386-103 ed2) lets sensors, push-buttons and controllers share the same DALI segment.