Circuit overload protector devices; Communication hubs; Electric cables, wires, conductors and connection fittings therefor; Electrical voice intracommunications systems comprising control stations, interface modules, frames, controller cards, connectors, power supplies, panels and mountings for use in the production of live musical performances, theatre, and other live events; Electronic equipment, namely, transformers, baluns, and cables, all used in connection with computers, computer peri...