You  want to connect severalunits of audio-video equipment,butthere is a lack of television input signal source terminals.

The signal connection wires are often plugged and unplugged,which is very inconvenien .

The kids at home wants to connect several units of television game players and use simultaneously,you may switch 3-group av audio-video signal input and 1-group output to the television.

DVD,VCD,TV GAME ,VCR station selector,satellite tv.cameras,etc, Directly exposed manual switchover ,design of no connection to power,quick installation and convenient application