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-e...