Without going into tech details....ordinary DMX512 dimmerpacks use a method of dimming which will always give a little 'voltage' on the outputs.In case of low voltage LED lights, the packs will tend to turn them on with this residual output.

You can do one of 2 things:

1) Check if the existing pack has a preheat switch .If yes, switch it off and try...it may work.

2) Buy a DMX512 relay pack....the relays are potential free and usually switch on/off at 50% of the DMX512 value. You need to wire your LED circuit thru the relay contacts using a seperate mains connection.You can get 4/8 channel fully assembled circuit boards in the market and put it in your own cabinet. DO NOT use solid state DMX512 relay boards.

Try http://northlightdmx.com/DMXtoRelay.htm



You cud get cheaper stuff if you hunt around on the net


Ujjal Kar