The standalone units can be used with anything that speaks DMX (you may need to make a cable between the receiver). I have used them with conventional RGB PAR cans and with the RGB-pixel boxes from Ray.
The EX/RX units may be used with other devices if they have sufficient stable 5vdc power available; there's an You are not allowed to view links.
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Login on making an adapter cable that would connect to the board inside other controllers. I know it has been tested with the MR16 and SSR4, and is officially supported for the Aether.
/mike