Electric connection components, in particular connectors, plugs, bushings, contacts and terminals for printed circuit boards, installation material for making electric connections, in particular connection components comprising of electric connectors, plugs, bases, bushings, terminals, adapters, couplings, connection boxes, sockets, distribution boxes, distribution panels, patch panels, distribution cables, patch cables, cables, cable sets comprising of cables and connectors, pre-installed connection conduits for data and telecommunications network; installation material for making optical connections, in particular connection components comprising of optical fibres, light conduction filaments, optical fibre cords, fibre-optic cables, optical connectors, plugs, bases, bushings, adapters, couplings, connection boxes, sockets, distribution panels, patch panels, distribution cables, patch cables, fibre-optic cable sets comprising of optical cables and connectors, preinstalled fibre-optic connection conduits for data and telecommunication networks; testing and measuring apparatus, in particular for electric networks, for optical networks, for data transmission and for telecommunications; electric, electronic and optical components and systems made thereof comprising of electric connectors, plugs, terminals, adapters, couplings, distribution boxes, distribution panels, patch panels, distribution cables, patch cables, cables, optical fibres, light conduction filaments, optical fibre cords, fibre-optic cables, optical connectors, optical plugs, optical adapters, optical couplings, optical distribution panels, optical patch panels, optical distribution cables, optical patch cables for managing connections on distribution panels or patch panels; electric and electronic assemblies and equipment, namely, analog and digital input and output modules, timers, monitoring assemblies comprising of monitoring modules and monitoring software, electrical power supplies comprising of AC/DC power supplies and DC/DC power supplies, control apparatus, sensors and systems made thereof comprising of analog and digital input and output modules, timers, monitoring assemblies comprising of monitoring modules and monitoring software, electrical power supplies comprising of AC/DC power supplies and DC/DC power supplies, wireless or computer network repeaters, gateway routers, and hubs; electronic devices for the measuring, capture, storage, transmission and evaluation of energy consumption or environmental information; electric and electronic protective and switching equipment, in particular relays, coupling modules, fuses, overvoltage protection modules, and switches