Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electric switches; lasers, not for medical purposes; light control systems primarily composed of electronic control gears for LED lamps and light fixtures, LED and HID light controls; light emitting diodes (LED), namely, organic LED, laser diodes, especially power laser diodes, semiconductor power laser diodes for material processing, electrical components for semi-conductors, and light conducting filaments; optocouplers, namely, optical sensors that transfer electrical signals by using light waves; optical sensors; light emitting diode displays, namely, light barriers for use in detecting physical presence of an object and LED modules, specifically, signaling modules composed of LEDs and organic LEDs with light functions for use as emergency signal transmitters, directional signals and vehicle traffic signals; LED displays and organic LED displays and replacement parts therefor