This simple circuit activates a relay when it senses a composite video signal. This allows the user to use the tuner built into VCR to turn ON and OFF older TVs that are not equipped with a remote. It can also be used to activate surround sound equipment, turn off the room lights, turn on video game consoles, etc.

For detailed information about this project, visit http://www.edgefxkits.com/video-activated-relay-to-control-the-load