9 electrical and electronic apparatus for industrial communications and control engineering, namely, radio and infrared remote controls, electronic control circuits for valves; apparatus and electronic components for the generation, storage and processing of sound in conjunction with data processing units, namely, electronic mixers, midi interfaces; electronic components for data processing units, namely, integrated circuits, RF-circuit boards, memories for storage of data, microprocessors, computer interface boards; input units for data processing units or control units, namely, keyboards, mouse, joysticks