DMX2CC allows DMX control of high power LEDs (1 and 3W) using a constant current dimming method, ensuring flicker-free and smooth dimming, especially for environments such as television studios. A DMX-out port repeats and amplifies the DMX signal for convenient daisy-chaining in projects where one DMX input signal must be distributed among several of these devices. Additionally, a self-diagnostic test function prevents damage to the unit and LEDs caused by incorrect wiring, open or short circuit and overheating. DMX2CC is easily set up with auto and manual DMX addressing modes, and conveniently mountable inside equipment racks using standardized 35mm wide DIN rail.