I do not have access to a volt/ohm meter. I don’t have issues with rats and checked the wire and it is intact. The Valves on the outside are also covered and I checked them this morning and they are fine. It rained here a little bit two days ago but I live in the high desert California so it is very dry right now and should not be an issue. I don’t have a rain sensor that I know of, before getting the Rachio, it would run even it if rained.