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; compact discs; DVDs; digital recording media; mechanisms for coin-operated apparatus; cash registers; calculators; data processing hardware; computers; computer software; fire-extinguishing apparatus; switches; manual switches; key-operated switches; switches for garage door drives; switches for door drives; switches for revolving gate drives; switches for sliding gate operators; code switches; radio code switches; transmitters; wireless transmitters; electrical transmitters; optical transmitters; transmitters for transmission of signals to garage door drives; transmitters for transmission of signals to door drives; transmitters for transmission of signals to revolving gate drives; transmitters for transmission of signals to sliding gate operators