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Early remotes were wired to the TV set with a 20 foot wire cable.
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Used a beam of light aimed at one of the sensors on the four corners of the picture tube.
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When the user pushed a button on the remote, it clicked and struck a bar.
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Introduced in 1965. This design was in use until the end of the
1972 model year. -
Using a low frequency light beam, so that the human eye cannot see it. It can be detected by a receiver in the TV.
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Multiple remote controls were introduced into homes with one or more televisions.
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Zenith developed the worlds first wireless trackball TV remote control.
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This allows users to connect with devices such as the IPhone to control the TV, Blu Ray Players, and more.
