9 Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; apparatus for recording, transmission or reproduction of sound and images; blank magnetic data carriers, recording discs; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; electric installation apparatus and materials, namely, installation boxes, enclosures for electrical equipment, fire-resistant protective enclosures, wiring accessories, switches, power sockets and lighting control electronics, distribution boards and switchgears, transformers, heat sinks for use in electronic components; electricity transmission and distribution equipment, namely, overhead line equipment and underground cable equipment in the nature of cables for electrical transmission systems; network automation products and power electronics products, namely, fault detection, remote switch operation in medium voltage/low voltage stations and low voltage output protection and distribution, voltage boosters, voltage controllers and voltage phase balancers; railway insulation bushings for anodes, railway electrification connectors and clamps, railway electrification pole accessories, electrical distribution boards, connectors and terminals, automatic timers; socket outlets; switches; electrical cables, cable locators, electrical conduits, optical fiber cables, optical cables, electric cable connectors, cable modems; electrical connections, namely, cold shrink splices, cable protectors; power electronics, namely, transformers, power regulators, electronic transformers, dry-type transformers, power modules, electric and electronic circuits; voltage regulators for electric power, fuses, electrical branch boxes, junction boxes; charging devices, charging poles, charging devices and poles for electric vehicles, battery charging devices, battery charging displays, battery charging indicators, battery charging monitors, battery charging detectors; live wire detectors; electronic apparatus and computer hardware for wireless communication, namely, wireless communication devices for voice, data or image transmission; remote controllers of voltage load; remote controllers of heating, ventilation and lighting