This dmx dimming LED Power controller is a perfect solution for 12 Volts installations of DMX controlled Led products. Excellent dimming (0-100%) is achieved via 8 bid PWM, 256 steps brightness led control for every channel without flickering! Stand alone operation is also available (build in colour changing combinations activated when no DMX signal is present). All you need to do is to power on the controller (12V) and connect it with the DMX programmer, assign the required DMX address in advance and then disconnect and install the controller with the rgb led strip; the preset dmx address will remain stored (no power necessary). This controller can only be used with 12 volts rgb led strip lighting; available are 3 channels of 6Amps each (s ested not to exceed the 4A per channel) that can be individually controlled by DMX512 control signal.

http://www.hiline-lighting.com/pd-dmx512-rgb-pwm-led-controller-4a.cfm