9 Measuring, signaling, checking, supervision and monitoring units, apparatus and instruments as well as parts thereof, namely, flow regulators, thermometers, electrical and electronic controllers for stoves, coolers, ventilators, air conditioners and pasteurizers; transducers, heat flow meters, steam flow meters, thermostats, sensors for determining heat temperature; moisture clocks, namely, humidistats and parts therefor for use as steam measuring and control devices, programmed switches, digital compact controllers for use in the heating, air conditioning, and ventilation field or in industrial process technology in connection with pipelines, digital analog converters, pressure switches, engine coolant regulators; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling of electricity, namely, electrical regulators; electrical switches; electrical controllers for machine tools; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers; data processing apparatus and computers; downloadable and/or recorded computer operating system programs; downloadable and/or recorded computer software use in regulating and designing heating, air conditioning, and ventilation systems and for regulating and designing the flow of liquids and gases in pipelines; semiconductor chips; magnetic encoders