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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.
an ac power supply, in the 100va to 50kva power range, used by oems (original equipment manufacturers), hospitals, and other organizations requiring voltage selectable input and/or output, medical grade power-line isolation, low leakage current, power-line filtration, noise suppression, and thermal over-temperature protection, as well as protection from overload and short-circuit conditions.