Chauvet DJ DMX-4 Dimmer/Relay PackChauvet DJs 4 channel dimmer relay pack brings DMX control to units without DMX. Control is over on off and dimming functions. Optimized for small LED fixtures, the DMX 4 uses built in circuitry to produce a phantom load. This prevents ghosting and flickering with the addition of DMX control. There are 4 sets of outlets (duplex), so you can control up to 8 fixtures with the DMX 4. Each outlet can be set to any DMX address and independently set as a