I'm not familiar enough with the DMX Duo, but a quick view of the DMX Duo shows me there is a software pacakge for it you can download.
As far as the 5-pin connector, it says you can use a standard MIDI cable, but you are limited to the fog machine models. The manual states:
quote:
Compatible foggers include
ADJ MB-1000, Stallion, Vapor-Flow, Fog Storm-1200 and Fog Storm-1700
So, your GEM won't work via that control, but you can still program it via a scene or whatever the DMX Duo works off of. If your fog machine is DMX capable, you should be fine as long as you have channels.
In my case, I hae a Fog Storm 700 with a wireless controller for it. I push the button on the car alarm-inspired remote control when I need some fog. I rarely need fog, so I rarely set it up.
Any other questions about the GEM should be directed to the maker of it just to ensure a proper answer. I bet though that it's not compatible via that special port on the DMX Duo