DALI is the young generation lighting control protocol in the realm of lighting control at present, which adopt Manchester encoding transmission technology, can achieve powerful dimming functions such as overall dimming, group dimming, address dimming and various scene mode, brightness trace, breakdown feedback, etc. Modern hotel, shopping mall, household increasingly request for high standard lighting system. with the features of simplicity, reliability and super function, the DALI-bus protocol is widely used and showing the powerful advantage in the realm of intelligent lighting control. DALI-bus protocol used to be the complementary of the intelligent lighting master and dimmable ballast, which is used to adjust the lighting scenes of the fluorescent, adopts the latest DALI standard IEC62386(compatible with the old standard IEC60929), can connect any equipment that accord with DALI protocol with 1 DALI bus-mastering, realize the integration of LED lighting and traditional lighting in the same lighting system, greatly facilitate the users.