Well a little bird aka google told me it was a series of a 9 or 12 tiny switches that live in the garage door opener whose sequence of ups and downs creates a fingerprint.
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Here s the partially obscured so you can t get into our garage dip switch in one of our existing remotes.
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Chamberlain 1 25 hp myq secure view and ultra bright smart belt drive garage door opener with myq and wi fi compatibility and battery back up and led light and camera s item 1630354 model b6765.
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10 switch garage door opener.
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Wifi smart garage door controller wireless garage door opener wifi app switch remote control compatible with alexa google home and ifttt.
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These openers usually involved a wired switch being run from the door motor to a keypad or button that could be pressed from inside the vehicle.
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Match that sequence in your remote and you ve got a match.
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The first electric garage door opener was introduced in 1926 but didn t gain in popularity until after world war ii.
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As technology improved the wireless remote was created and used radio signals to.