The Anchor Audio PortaCom COM-40FC is a flexible, high-performance wired intercom system. Built smart and simple, PortaCom COM-40FC gives you two channels without sacrificing power or quality. It is expandable, portable or rack mountable. It even has an optional battery supply module for remote locations. Best of all PortaCom COM-40FC is priced to sell to the junior high school theater, the local cable studio or the high school football coach.