9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, microprocessors, circuit boards, power modules, computer network hubs, computer network interface devices, computer network server, and computer network switches; signal transmitter and receiver, namely, radio transmitters and receivers, wireless transmitters and receivers; computer hardware, computer programs and software used to control lighting fixtures and media facade and to create, edit, store, manipulate, stimulate and display artificial light, images, sound or combinations thereof; light emitting diode (LED) lighting controllers; electric cables for use with interface units for lighting; power supplies for lighting systems; electrical cables, coaxial cables, electronic display interfaces for control devices and operating software for computer and control devices; transmitters of electrical signals; computer hardware in relation to lighting or lighting-related parts and fittings; energy-saving lighting components and apparatus, namely, power management controller and energy controller