1. You want to connect serial units of audio-video equipment, but there is a lack of television input signal source terminals, the signal connection wires are often plugged and unplugged, which is very inconvenient.
2. The kids at home wants to connect several units of television game plays and use simultaneously, you may switch 4 group AV audio-video signal input and 1 group output to the television. DVD, VCD, Game, VCR station selector, satellite TV, cameras, etc.
3. Directly exposed manual switch over, design of no connection to power, quick installation and convenient application.