Adapters for connection between electronic media devices, namely, electrical adapters, ethernet adapters, voice over internet protocol (VOIP) adapters, power adapters, control and display information adapters in the nature of electrical adapters, optical input data adapters in the nature of electrical adapters, sensor input data adapters in the nature of electrical adapters, positional adjustment adapters in the nature of electrical adapters; mechanical and luminous electronic advertisement boards; mechanical electronic advertisement display unit; luminous electronic advertisement display unit, namely, electroluminescent phosphor displays and electric luminescent display panels; mechanical and luminous electronic advertising display in the nature of digital signs; luminous electronic advertising signboards; mechanical electronic advertising signboards; Apparatus for recording, transmission or reproduction of sound and images; non-medical apparatus for the processing of data; non-medical apparatus for the processing of images; non-medical apparatus for the reproduction of images; Apparatus for the transmission of data; Colour video processors; Digital signage monitors; Digital signage; Digital signal processors; Digital signs; Electrical adapters; Electrical adaptors; Electric sensors; Electronic sensors for sensing sound, light, movement, position, distance, atmospheric conditions, colour, orientation, acceleration, temperature, moisture, electrical functionality and integrity; Electronic touch sensitive switches; Electro-optical couplers; Electro-optical sensors; Electrophoretic displays; Illuminated advertisements being electronic advertisement boards featuring neon and other lighting; electronic illuminated advertising signs; electronic illuminated signs; Light conducting filaments being optical fibers; Light diodes; Light emitting diode displays; Light emitting diodes (LEDs); Light sensitive electronic relays, namely, electronic data relays for sensors; Light sensors; Light-conducting filaments; Light-emitting diodes (LED); OLED (Organic light emitting diode) display panels; Optical apparatus and instruments, namely, optical filters for screens and display panels; Optical beam deflectors; Optical fiber connectors; Electronic and optical communications instruments and components in the nature of optical emitters, namely, optical transmitters, optical transceivers, optical receivers, and digital transmitters; Optical sensors; luminous electronic sign boards; signals, luminous or mechanical, being digital signage display panels; electronic signs that are luminous; Silicon carbide diodes