garage door openers ryan cowanids 1999 [email protected] blake cowan11/2/[email protected]
TRANSCRIPT
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The Electric Opener C.G. Johnson 1926 in Hartford City Indiana Spring Electric motor Controls Runs on a track
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Remote Control Two U.S. inventors Transmitter & receiver Designated frequency
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Cloning Remotes Same Operating Frequency Only Fixed Code Clone Remote Must Be Cleared
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Additional Features Automatic Light Remote Locks Keychain and Deadbolt
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Safety Motion Sensor Must Have Quick Release Children Should Never Operate
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Video http://www.youtube.com/watch?v=oNkr6jLqE38
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Sources http://en.wikipedia.org/wiki/Garage_door_opener
http://www.popularmechanics.com/home/improvement/outdoor-projects/garage-door-opener-how-it-works