Thanks @lmosenko, but it’s more of a ‘last-man-out’ convenience system than a full blown security system. We already pay money for a conventional security setup, a few doors (open/closed) internal, external, motion sensors, etc. Don’t really need cameras, the building is out in the country. That being said, we don’t want to be stupid and leave any door open and/or unlocked. Insurance companies frown on that sort of thing.
As far as upgrading ‘all’ the light switches, kinda cost prohibitive. Also overkill to the point of being incompatible; please correct me if I’m wrong, but my understanding of what I’ve read about the limitations of Z-wave (not Z-wave plus), is that sensors can only go four hops. Keep in mind at this point I don’t have a Z-wave plus option (apparently unlimited hops). The GoControl (WADWAZ-1) is not plus, works great, but not plus. I tried the Ecolink (DWZWAVE2.5-ECO), but the internal reed sensor and the external terminal contacts are wired in parallel. Either one triggering will report as ‘closed’. Sending that one back to Amazon.