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Electrical industrial sensors, namely optical, electronic, opto-electronic, photo-electrical, acousto-electrical, magnetic, inductive and capacitive sensors; electrical light barriers, light scanners, light grids, namely devices for monitoring areas and spaces with radiation beams, opto-electronic sensors for fine positioning at transfer and docking stations in handling and warehousing systems, distance sensors and color sensors; optical, electronic, opto-electronic, photo-electric, acousto-electric, magnetic, inductive and capacitive sensors for automation technology, namely for the automatic inspection of plane and sheet materials, for the examination of characteristics of such materials, for the recognition of faults, color, shape, position, contour, volume, distance, texture or surface characteristics of objects for the automatic identification, quality control, positioning, using and regulation, or for automation in the areas of production, quality control, storage, the flow of goods, sales, transportation, laboratories, industrial plants, automobiles, traffic and public buildings; electronic, optical and opto-electronic apparatus for image processing, namely vision sensors and cameras for use in automation engineering and safety engineering; electric spectrometers and sensors, and laser scanners for industrial inspection; and data processors and computer programs for operating the aforementioned sensors and for use in activating, controlling and recording sensor activity in measuring, control and regulation technologies