My garage door's sensor was triggered by a cardboard box, and now I can't make the door open with the wall trigger or with the remote door opener. Is there a way to reset it? I can't find a reset button unless it's on the top and I can't see up there. I've tried unplugging the unit for a few minutes to see if it would reset and it didn't. It was an extra line of defense against intruders, because you couldn't open the door by hand, you had to use the wall trigger or the remote. Now it rolls way too easily. I just bought this house and it would be great if I could find a manual online that I could download.
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