SKU: DP-DMX20L | UPC: 819730012166
ADJ's DP-DMX20L is a 4 channel universal, portable DMX dimmer/switch pack. That has a selectable 1,2 or 4 channel operation. With dual 3-prong Edison sockets per channel, allowing you to hook up two devices per channel. Also the DP-DMX20L has 4 LED's display for channel activity.
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Product Description


ADJ's DP-DMX20L is a 4 channel portable and universal DMX dimmer/switch pack. Each channel can individually be set to dim or switch and the pack can function as a one, two or four channel device. Using the packs digital display, the pack is quick and easy to set up.

There are dual Edison sockets supplied so more than one effect can be connected to each channel. There are 16 built in chase sequences, with speed and intensity control, available for your convenience. This device also has four external channel fuses which allows for quick and easy serviceability while out on the road.

Another feature we included was the sleek reversible mounting panel on the rear to make it easier to install. Also for your safety we have a zero crossing circuitry for protection of the transformer loads when switching.  



  • 4 channel DMX Dimmer Pack
  • Digital display- used to set starting DMX address channels and set all other menu options
  • Selectable 1, 2, or 4 channel operation
  • Adjustable master dim level.
  • Two three prong Edison sockets per channel
  • 3 pin XLR DMX Input & Output
  • Four LED’s display channel activity
  • External channel fuses for quick and easy replacement
  • Sleek reversible mounting panel on the rear
  • Zero crossing circuitry for protection of transformer loads when switching
  • 16 built in Chases when in Chase mode with adjustable speed setting
  • Use in conjunction with; DMX Operator Pro, Stage Setter-8, Scene Setter-24 & Stage Setter 24
  • Reversible mounting brackets.
  • Power Input: 120V ~ 60Hz
  • Maximum Load: 6.3A per channel / 15A total
  • Dimensions: 10.25”L x 8.25”W x 3”H
  • Weight: 6 lbs



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The following downloads are available for this product:

Title Description
DP-DMX20L User Manual User Manual Download


Frequently Asked Questions

Please see our frequently asked questions below. Please feel free to send us your questions by clicking here.

I received a DP-DMX20L unit and I noticed an odd quirk with the unit. When it is both in dimmer and switch mode there is a slight power "leak" that is let off every 1.5-2 seconds. For example, I had the Micro Galaxian laser plugged into channel 3 and an ADJ strobe in channel 4. The laser's fan would start up every 1.5-2 seconds and then stop. The strobe light would run constantly on a low power setting. I checked all of the different settings and could not come up with an answer for why this would be happening. Is this supposed to happen?

The circutry in dimmers and relay packs can leak voltage which LED devices are sensitive to. Purchase the LED579 or Led Dummy which is a dummy load that eliminates the leakage.

What fuse does it take? I blew two of them plugging in 4 par 56's with 300-watt bulbs into one plug, I am only 13, but I learned my lesson.

Here is the link for the parts offer on the DP-DMX20L. The external fuse is a 10amp GMA style and the internal fuse is a 1amp Gma.  http://parts.adj.com/ProductsList.aspx?ProductLine=0095&ProductDesc=DP-DMX20L

I have some par 64 cans that are 500 watts each. will one of the channels hold one of my lights? also how many watts will one plug hold?

The DP-DMX20L is designed to hold 5 amps per channel which is equivalent to 600 watts. Just keep in mind that the maximum load is 15 amps total (1800 watts).