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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
personal communication hardware and equipment, namely headsets, microphones, throat microphones, electrical power supplies for audio communications systems, extension cords, junction and splitter boxes, and belts and straps with holders to secure personal communication devices to the human body, intercom, hardwired systems comprising headsets, extension cords and junction boxes, electrical distribution boxes, life safety rope with integral communication wiring, electrical couplers, carrying bags and hard cases for carrying personal communications equipment, all for fire fighters, rescuers, and tactical personnel; underwater transducers; electrical power supplies for personal communication equipment; audio speakers and microphone assemblies; power amplifiers; audio/visual interfaces for presenting video and/or audio signals to audio/video equipment