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. In 1956, Zenith created one of the first wireless TV remotes. This remote featured a small hammer that would hit one of four aluminum bars, producing an ultrasonic sound that was not audible to the human ear.

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Fun Fact: .

In 1956, Zenith created one of the first wireless TV remotes. This remote featured a small hammer that would hit one of four aluminum bars, producing an ultrasonic sound that was not audible to the human ear.

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