Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; electric and fibre optic cables; electric conduits; electric installations for the remote control of industrial operations; anti-theft warning apparatus; electrified fences; electro-dynamic apparatus for the remote control of signals; transmitters of electronic signals; electrical apparatus including energisers and controllers for electric fences, fence testers, switches, fault detection meters, voltmeters, solar panels, electric fence monitors; parts and fittings for electric fence apparatus