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Overheard a supply house guy say most door sensors fail from bad wire crimps not the sensor itself
I was picking up resistors yesterday and this old installer said he sees 70% of false alarms traced back to loose crimps on the resistor connections. Makes me want to double-check every single one I have out there before I get a call back. Has anyone else run into this?
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joelfoster1mo ago
Man, I used to think it was always the sensor going bad or maybe some interference issue. I'd swap out a whole contact for fifteen minutes troubleshooting only to find a barely loose wire nut back at the panel. It's honestly embarrassing how many times I've chased ghosts that were just a half-crimped connection on the resistor leg. Now I always give the wires a firm tug before I button up the box, and I keep extra pairs of crimpers in my truck to make sure I get a good bite every time.
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caleb_sanchez1mo ago
Wait, hold up. "half-crimped connection on the resistor leg" - that is way too specific @joelfoster, you're telling me you've actually seen that as the root cause? I've had my fair share of loose wire nuts drive me crazy but never once thought to blame a resistor leg crimp. That's some next level troubleshooting right there, I've definitely been guilty of just swapping parts and hoping for the best. The tug test is solid advice too, I'm gonna start doing that before I close anything up.
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