The Clapper
Sound activated electrical switch From Wikipedia, the free encyclopedia
Sound activated electrical switch From Wikipedia, the free encyclopedia
The Clapper is a sound-activated electrical switch,[1] sold since 1984 by San Francisco, California based Joseph Enterprises, Inc. Joseph Pedott marketed the clapper with the slogan "Clap On! Clap Off! The Clapper!".[2]
The Clapper plugs into a U.S.-type electrical outlet, and allows control of up to two devices plugged into the Clapper.[3] An upgraded model, known as the Clapper Plus, includes a remote control function in addition to the original sound-based activation.[4]
Although meant to activate by clapping, The Clapper can inadvertently be triggered by other noises like dogs barking for example.[5]
The smart Clapper was invented by Carlile R. Stevens and Dale E. Reamer, and issued U.S. Patent #5493618,had its application filed on 1993-05-07 and was granted on 20 February 1996.[6]
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