B.E.G. DALI-LINK power supply for mounting on DIN rails. The power supply can connect, for example, 45 DALI lights and 10 DALI-LINK control devices (multi-sensors or switch interfaces). The integrated USB interface allows for expansion to the networkable B.E.G. LUXOMAT(R)net DALI-SYS lighting management solution. Integrated LEDs visualize operational information. The commissioning of the B.E.G. LUXOMAT(R)net DALI-LINK solution is done via a free app and the switch module PBM-DALI-LINK-4W-BLE.