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 and other digital recording media; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, computers; computer software; fire-extinguishing apparatus; matrix switches; crossbar switches; switches, in particular remote switches; changeover switches; extenders, in particular VGA extenders and USB extenders; devices for converting signals; devices for increasing the distance during signal transmission, in particular repeaters; distribution consoles electricity; holders for electrical and electronic devices and cables, in particular mounting plates; power supply units; transformers; amplifiers for signals, in particular electrical and electronic amplifiers for video, audio and data signals; USB cables; USB dongles wireless network adapters; bus interfaces; signal cables for IT, audiovision and telecommunications, in particular optical and electrical fiber cables; cable ducts; computer peripheral devices; display screens; flat panel displays; interference suppression devices electricity; remote controls; terminals electricity; contacts electrical; acoustic couplers; couplers data processing equipment; loudspeakers; luminous signs; measuring apparatus; relays electrical; electrical fuses; signalling apparatus; transmitters for electronic signals; voltage boosters; sound measuring devices