9 Measuring, signalling, checking, supervision apparatus and instruments, namely, lighting control apparatus, tool measuring instruments, pressure measuring apparatus, signal mirrors, light systems comprising light sensors and switches, electronic devices for measuring electric current, electrical signal attenuators as well as electronic monitors and monitor modules for monitoring electric current and electrical signals; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; downloadable and recorded computer software, programs, system support software and firmware for measuring, monitoring, controlling, signalling, optimizing and supervising electricity, electrical and electronic components as well as electrical circuits and circuit boards; downloadable and recorded computer software, programs, system support software and firmware for operating and managing electric power supply apparatus and equipment; downloadable and recorded computer software, programs, system support software and firmware for controlling, signalling and programming lights and motion sensors; electrical and electronic components in the nature of capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers and transistors; electric transformers; electric voltage transformers; electric connectors; electric cable; cable connectors; voltage surge suppressors; extension cables; electronic control systems for airfield lightning systems comprised of lighting control apparatus; electric device transformers; overvoltage protection equipment, namely, voltage surge protectors; overvoltage protectors, namely, voltage surge protectors; electronic measuring apparatus, namely, tool measuring instruments, pressure measuring apparatus, electronic devices for measuring electric current, electrical signal attenuators as well as electronic monitors and monitor modules for monitoring electric current and electrical signals; control and safety apparatus for electronic networks, namely, components securing the control and monitoring apparatus in an airport lighting system as well as personal safety, namely lighting control panels, lighting controls, battery monitors; electrical reactors, electrical transformers; electric lighting transformers; semiconductor power elements, semiconductor electric switches, transistors, integrated circuits; electronic components, specifically circuit boards including their components for controlling lights, ensuring safe voltage and managing faults; electromagnetic compatibility (EMC) protection components, namely, electromagnetic coils, conductive silicone packing for electro-magnetic interference, solenoid valves