Not sure what they are called, but I'm talking about the little devices low on the garage door frame that detect when an object such as an animal is under the door.
One of these got knocked out of alignment when something fell against it. So now, the garage door won't close unless I hold the button down while it closes.
I don't know how to align them so they work again. I have not been particularly observant as to whether there is supposed to be a light showing on both of them, or only one. Right now, there is a light only on one side of the door frame.
Anyway, I'd appreciate some advice on how to align these devices. It is a
16 foot opening, so laying a board across from one to the other is pretty much out.Bob