Computer software applications, downloadable; computers; quantity indicators; ticket dispensers; facsimile machines; weighing apparatus and instruments; measures; traffic-light apparatus [signalling devices]; satellite navigational apparatus; smartphones; electro-dynamic apparatus for the remote control of signals; slide projectors; pressure gauges; ammeters; teaching apparatus; surveying apparatus and instruments; galvanometers; measuring devices, electric; precision measuring apparatus; kilometer recorders for vehicles; simulators for the steering and control of vehicles; optical apparatus and instruments; materials for electricity mains [wires, cables]; optical fibres [light conducting filaments]; semi-conductors; variometers; terminals [electricity]; junction boxes [electricity]; control panels [electricity]; current rectifiers; lighting ballasts; regulating apparatus, electric; switches, electric; voltage surge protectors; couplings, electric; resistances, electric; fluorescent screens; inverters [electricity]; remote control apparatus; distribution consoles [electricity]; distribution boxes [electricity]; integrated circuits; electric installations for the remote control of industrial operations; fire extinguishing apparatus; protective helmets; alarms; spectacles; photovoltaic cells; solar batteries; batteries, electric; slides [photography].