Note that this is, I believe, an FB3 card with a W-DMX module in the box with it; therefore not wireless ILDA control, just wireless dmx control of the cues/frames stored on the FB3's SD card.
W-DMX is pretty reliable though. I have a bundle of CORE LED battery lighting that runs on W-DMX and have used them in multiple rooms in VERY solid buildings like Somerset House in London and they didn't flinch at being 100meters apart and through solid stone walls etc...
You'd still have to run some sort of wired interloc/e-stop though wouldn't you?

