The Clapper

The Clapper is a device invented in 1984. It's an electrical switch designed to react to sound (specifically clapping) so lamps and other appliances could be turned off without the owners physically doing so. It became a cultural icon due to 1980s commercials with the slogan (often delivered as a jingle), "Clap on, clap off - The Clapper!"
==References==
*Robbie Sinclair notes his stiff science fair competition in the second season Dinosaurs episode "Power Erupts": "Did you see Billy Melman's project where you clap and a lamp turns on?" After Robbie's project is praised as innovative and workable by Mr. Pulman, he and Spike exchange high fives, triggering the lights to go out. Billy Melman's voice is heard saying, "Clap on, clap off! I'm a millionaire!"
*Ace Hart appears in a commercial for the Slapper ("Slap on, slap off") in the first season Dog City episode "Ya Gotta Have Hart."
* The alarm on Oscar's Sloppy Jalopy in Sesame Street Episode 3307 is turned on with a simple clap.
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Category:Advertising References