Clap On! Clap Off! The Clapper is the device that’s activated by sound sensory, and will turn on or off any appliance plugged into it. Your TV, stereos, lamps and more - just plug them into The Clapper, then plug The Clapper into any socket in your wall. Simply clap 3 times and The Clapper does the hard work! Featuring clap detection lights, so you can see your claps register – Plus, sound sensitivity settings to increase or decrease The Clapper's response to your unique clap. You can even set The Clapper to activate on ANY noise, making it a great theft deterrent for when you’re not home.