I'm not sure how much distance a low voltage signal can travel reliably, so I'm not sure whether my first idea is feasible.
Thank you for the detailed responses. I'm encouraged. If I have the same experience as Paul, i.e. flawless performance, then I'm good to go. Similarly, if the signal turns out to be suboptimal, as can be the case from Grumpy_Mike's background, both he and DVDdoug have given me a few concepts to correct the possible erratic results. This is great! Thank you.One follow up. Do you feel the Arduino-supplied 5 VDC voltage should provide adequate voltage for my situation? Or should I consider a different (higher) DC voltage? I'm unfamiliar with the true gauge, but I imagine I would run "speaker wire" as the main conduit between the arduino and the switch, to lessen any impact that might occur with a tinier gauge wire - unless you wave me off from using that approach.Appreciate your expertise and thoughtful repliesJohn
from what I understand of the NEC code, I'm required to use 12gauge conductors when extending a 20 amp circuit, so I will go with that.