Device for the routing and distribution of several video (and possibly audio) signals to several destinations. Synonyms: Routing Switcher; Switching Matrix
is a type of switcher which allows a single input to be switched to many outputs. Matrix switchers are used in large CCTV systems and have many powerful features.
Usually a combination or array of electromechanical or electronic switches which route a number of video image/signal sources to one or multiple viewing/recording components.