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Reply to "Garage door security tip"

I know first hand about the door openers malfunctioning . Had it happen a few years ago. Lift master direct shaft drive unit. I would find the door open and the alarm going off. After this happening twice over a couple week period I still could not put my finger on why or how. Then one day I was working in the garage and the 1 door electronic lock disengaged and the door went up.
I finally bought a new circuit board and door button and it cured the problem.
I was gun shy at that point so also wired up a Relay that is wired of the light switch so the motor only has power when the lights are turned on. Since this garage is only for storage it works fine. Now no more surprise openings.
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