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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.
automatic mute feature, implemented by software, in police radar and laser detectors and annunciators for reducing and/or eliminating false alarms, muting and controlling the audible volume of the annunciator, improving the response time of the laser and/or radar detectors, enhancing frequency discrimination of the detectors, reducing power consumption, and increasing reliability and useful life of detectors and annunciators