Yes, it works that way by default.

When any RC4Magic receiver/dimmer is receiving wireless DMX, the full DMX universe is output on the miniplug. Thus, all devices are a complete wireless DMX receiver, *plus* whatever dimmer features it may have.

If the device is not receiving wireless DMX, the miniplug automatically reverts to being an input, and any wired source of DMX data can be connected to it.

We have both male and female 5-pin XLR adaptors available, or you can make your own. (Pin out information, along with a lot of other information) can be found at http://rc4.info.)

There is a parameter you can access with our configuration software, RC4 Commander, that allows you to force the dimmer to either respond to wireless or wired DMX.  If you set it to use wired DMX, it will still respond to configuration data wirelessly, but the dimmers will respond to the wired DMX channel levels.  This is particularly handy when configuring a DMXpix pixel driver, to find the optimal settings for RC4 Custom Pixel Profile parameters.