A connecting device for connecting to an electrical connection system of a solar module includes a connector housing to be arranged on an outer surface of the solar module and also at least one conductor component, which is arranged in the connector housing. A bra comprises cotton, elastic cloth, and nylon with or without underwire. The interface includes one or more display objects, wherein each display object is selectable by a user to enter a command input assigned to that display object. The emitter layer may consists of carbon nanotubes, diamond-like carbon, a metal or a mixture of metals or a semiconductor material, e.