Sturdy dimmer trafo for 12V or 24V LED light source, all-in-one function (trafo with integrated PWM dimmer). Dimming via DALI, potential-free pushbutton, potentiometer or 1-10V. Optional memory function (lights up with latest set value) after power failure, also via pushbutton. 1-10 units can be linked together and controlled from one or more locations with a spring-loaded potential-free pushbutton. Two outputs with push-in terminals, the entire capacity can be taken out via one output or split.