When was The Clapper invented?

Joseph Pedott applied for a design patent on The Clapper on Nov. 13th, 1985. Mr. Pedott sold his first clapper on September 1st of that same year. Mr. Pedott's company, the San Francisco-based Joseph Enterprises, also markets and sells Chia Pets, the sculpted plant product, as of 2015.

The Clapper is a switch toggled by auditory cues. Customers can use it to control up to two devices, usually by clapping. The device has two modes. In "home" mode, it responds to owner cues to toggle on or off. In "away" mode, it functions as a security device, turning on at any noise.