9 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; electric and electronic controls aimed to communicate to the consumer the energy consumptions; computer displays; electric plugs; communication interfaces; USB carriers; electricity meters; apparatus and instruments for monitoring, controlling and metering gas; electricity and gas meters; apparatus for the communication of information on the measurement and consumption of electricity and gas, apparatus for the communication between gas and electricity suppliers and the relevant users, devices for energy management in the field of domotics, apparatus for collection, reporting and management of information about the parameters of the electricity and gas distribution networks; photovoltaic cells, photovoltaic solar modules, photovoltaic apparatus