Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.

"They just don't make 'em like they used to." That much is true, but it ain't necessarily a bad thing—especially when we're talking about panel alignment. For example, cars of the '50s didn't really ...

Dear Pat: I just made a new opening in the wall for a door between two bedrooms. I have installed the door framing and door, but it does not close properly. How do I adjust the hinges so it fits ...