Lighting transformers; drivers for LED lightings in the nature of electrical controllers; light source panels for liquid crystal displays; light-emitting diodes (LEDs); optical fibres being light conducting filaments; optical fibers, namely, light conducting filaments; light emitting diode displays and drivers in the nature of electrical controllers; light exposure apparatus, namely, photographic exposure meters and exposure meters for photographic devices; light modulators, probes and sensors; light sensitive electrical relays; light-emitting diodes for use in drivers in the nature of electrical controllers; power supply apparatus in the nature of transformers; electrical transformers for use with lighting; regulating transformers; transformer units; distribution transformers; voltage transformers; power supply units comprising transformers; transformers, namely, power units; lighting control apparatus; disk drives, software drivers for use with solid state drives; solid-state devices, namely, solid state drives; solid-state memory devices, namely, memory cards, computer memories; analogue to digital converters; switch-mode current converter; adaptors for converting alternating current to direct current and adaptors for converting direct current to alternating current; integrated circuits; printed circuit boards; circuit boards, micro-circuits; substrated printed circuit boards; cable junctions for electric cables; electric junction boxes; electrical junction boxes; electricity junction boxes; junction boxes for electric wires; junction boxes for electrical circuits; junction boxes for electrical purposes; junction boxes for optical fibres; junction sleeves for electric cables