Apparatus for wireless transmission of acoustic information; Cable and wiring plates in the nature of protective sheaths for electrical cable and wiring; Data cables; Decorative switch plate covers; Electric sockets; Electric wires and cables; Electrical adapters; Electrical cables for use in connections; Electrical terminal boxes; Electronic cables; Electronic components, namely, piezoelectric switches; Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; Electronic testing equipment, namely, telecommunication line integrity testing apparatus; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, optical data links; Electronic and optical communications instruments and components, namely, optical receivers; Fiber optic connectors; Fiber optics; Multi-outlet socket blocks; Optical fiber cables; Plug adaptors; Plug connectors; Power distributing boxes; Power strips; Safety contact plugs; Telecommunication cables; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; Threaded cable connectors of metal; Touch panels; Uninterruptible electrical power supplies