The 4-pack of Chauvet DMX-4 includes four 4-channel dimmer/relay packs providing DMX control for on/off or dimming to units not equipped with DMX on their own. The fixture is optimized for use with small LED fixtures to prevent ghosting and flickering. Each of the 4 sets of outlets (duplex) can be set to any DMX address and independently set as a dimmer or relay. Sixteen user-selectable chase patterns make programming the Chauvet DMX-4 a breeze. Make sure your next show is synchronized using the DMX-4's built-in automated programs.