Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; electric current control devices; transistor current conversion apparatus; power converters; voltage converters; electrical transducers; direct current converters; current convertors; electric inverters; data processing equipment; computers; computer software; electrical cabling; cables (optical -); cable harnesses; cable sockets; commutators; switches, electric; electric apparatus for commutation and contactors; sensors; plug-in connectors; plugs, sockets and other contacts [electric connections]; electrical terminal connectors; sirens; apparatus and computer software for collecting, receiving, processing, displaying and presenting data and information; electric battery and accumulators; parts and fittings for electric batteries; rechargers for electric batteries and accumulators; electrical fuses; data communications apparatus; parts and fittings for the aforesaid goods in this class