I replied to Paul, but I'm starting to think that the subject of:
Arduinos connected to sensors and long wires, running 24-7 ..
and how do we protect them ..
Maybe be worth a thread of it's own. Comments??
Back in Olde History, I was responsible for Industrial Computer Stragedy (sp) for an IBM Chip Fab plant. Some stuff HAS been learned about this, often the hard way.