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Garage Door Openers Ryan Cowan IDS 1999 [email protected]
Blake Cowan 11/2/12 [email protected]
The Electric Opener C.G. Johnson 1926 in Hartford City Indiana Spring Electric motor Controls Runs on a track
Remote Control Two U.S. inventors Transmitter & receiver Designated frequency
Cloning Remotes Same Operating Frequency Only Fixed Code Clone Remote Must Be Cleared
Additional Features Automatic Light Remote Locks Keychain and Deadbolt
Safety Motion Sensor Must Have Quick Release Children Should Never Operate
Video http://www.youtube.com/watch?v=oNkr6jLqE38
Sources http://en.wikipedia.org/wiki/Garage_door_opener
http://www.popularmechanics.com/home/improvement/outdoor-projects/garage-door-opener-how-it-works