Yes and no and it doesn't matter :) Broadly and simplified: Adding a bluetooth module means that, not only is the device no longer "electrically equivalent" (

Yes and no and it doesn't matter :) Broadly and simplified: Adding a bluetooth module means that, not only is the device no longer "electrically equivalent" (which means you are re-certing), but you have gone from "unintentional radiator" to "intentional", which means you have a different and/or additional set of standards. A pre-certified module (as in, it has modular approval) under FCC means you do not have to test the "intentional radiator" part the module PROVIDED you exactly follow the instructions of the module supplier AND you don't do anything "stupid". Under CE, pre-certified module isn't a thing. It will certainly help you pass from a technical standpoint, but doesn't really let you "short-cut" the testing and paper work. Hope that makes sense and gives a rough idea. edit Apologies for rehashing what others have already said. I should have refreshed.