Clap Clap On /Clap Clap Off Module
Assembled and Tested - Control AC w/ Claps

This listing is for a DIY clap-clap on/clap-clap off relay module.  It bas been fully assembled and tested in house.  Upon power up, the device scans for two claps in succession. That will turn the relay on.  There is a red LED indicator on board that lets you know when the relay is turned on.  The above video will give you a full demonstration.  Just skip to the end.   I sell these in DIY kit form as well, so you build it yourself from scratch for a few dollars less!  This device requires 7-9v @ 100mA or higher in order to operate.  A 9v battery is nominal.  The relay pins are connected to a 3-pin terminal block.  

These pins are labelled:
NC - Normally Connected to the Common Pin
CO - Common Pin (Connected to the NC pin when the relay is off / Connected to the NO pin when the relay has been activated)
NO - Normally Open.  This pin is not connected to the Common Pin until the relay is activated.

The device is driven by a programmed micro-controller that detects loud noises.  The on board microphone picks up on these noises (claps).  When a single clap is detected, a countdown begins, and the device waits for another clap.  If another clap is detected within a short period after the first clap, then the relay will turn on, and stay on until another two claps are detected.
 
Requirements:
1) A 7v - 9v power supply (If you're going to use a wall wart, aim for a 7v-9v.  No more than 9v. 100mA or higher)
2) An imagination!

Features:
1) Power AC devices, such as a Christmas tree, or Christmas lights, lamps, etc.2) Two claps to turn on the relay; two claps to turn it off.  There is an on board red LED that acts to show you when the relay is on.  When the LED is emitting light, the relay is on.