I have a project that requires 4 rooms within a building, in close proximity to each be outfitted with a relay board using the Key Fob module as the communications module. We do NOT want the fobs used in any one room to interfere with any other room. Could I simply order 4 units, set them up individually and be up and running? I thought I read somewhere on the web site addressing this but can no longer find it. Could someone please advise?