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Saw a door sensor trick at a church in Dayton that I'm stealing
Last Sunday I was doing a panel swap at a small church off 3rd Street. The old system had a sensor on the main entry door that kept false alarming from the loose hinge. The pastor mentioned it, so I looked closer and noticed they had used a small plastic shim under the magnet to line it up with the reed switch. Took me 5 minutes to fix, but I'd always just repositioned the whole bracket or added a bigger gap. Anyone else use shims for uneven door frames, or is that just a hack that makes the inspector nervous?
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alice_harris352d ago
That shim trick is smart and I would take it a step further. If the frame is warped you can stack a couple thin nylon washers behind the magnet too, they won't rust or crack like plastic can over time. The key is using something non metallic so it doesn't mess with the field, and keeping it thin enough that the gap stays in spec. I've done this on a few older wood frames where the door sagged and the bracket had no more adjustment left. Inspector never blinked because the gap still reads right on the meter and the contact closes clean. Honestly beats drilling new holes in a finished frame any day.
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