Single-master DALI controller according to DALI (EN 62386) trademarked, for switching and dimming 16 independent lighting groups. A maximum of 64 standard DALI participants (DT0) according to DALI or DALI-2 can be connected. In conjunction with 8 light sensors LF/U 2.1, the device can be used as an 8-way light controller for constant light control. Error feedback can be programmed and activated via KNX. With convenient manual operation and status display. The addressing and group assignment of the DALI participants takes place via the ABB i-bus® tool. The i-bus® tool also supports the parameterization of the constant light control.