Electronic card readers; Electrical cables for use in connections; Connection cables; Microchip cards; Navigation apparatus for vehicles; Rechargers for electric accumulators; Plug adaptors; Blank digital storage media; USB cables for cellphones; 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 ev...