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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.
sensing and control devices, namely, magnetic contacts, glassbreak sensors, passive infrared sensors, fire and heat detectors, fire alarms, security and fire alarm control panels, speakers, power supplies, and sirens, for use in home and industrial alarm applications