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The Clapper
The Clapper is a sound activated electrical switch, sold by San Francisco, California based Joseph Enterprises, Inc. Robert E. Clapper, Sr. & Richard J. Pirong and marketed with the slogan "Clap On!" and as a separate phrase "Clap Off!". The Clapper works with any American standard electrical outlet. The Clapper allows control of up to two devices. An upgraded model known as the Clapper Plus includes a remote control function, in addition to the original sound-based activation. It also includes an away setting that will optionally turn on selected devices when a sound is heard〔 or motion is detected. The Clapper can inadvertently be triggered by other noises,〔(【引用サイトリンク】 title=The Clapper: "Does It Work?" )〕 such as coughing, a dog barking, a cabinet or door being closed, laughter, yelling, banging, knocking on a door or a wall, other sharp sounds, or noises from televisions and speakers. ==Patent== The Clapper, was issued US Patent #5493618 on July 9, 1985 and first sold to the public on September 1, 1986 by: Robert E. Clapper, Sr. & Richard J. Pirong.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「The Clapper」の詳細全文を読む
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