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This article discusses the issues of optoelectronic discrete converters of any type - longitudinal or transverse movement of the external modulating body. In connection with the development of such important sectors of the economy as mechanical engineering, metallurgy, oil and gas, chemical, industrial, construction, food industry and others, it is important to provide them with modern discrete displacement transducers, which allow monitoring and managing such important quantities as liquid level, speed and flow flows of gases and liquids, as well as automative the processes of automatic accounting of piece goods, products, goods, blanks and semifinished products, which allows you to objectively analyze the economic activities of enterprises and plan their further development. The variety of specific features of monitoring and control objects put forward a set of requirements for discrete converters of object parameters: high sensitivity, accuracy, reliability, sufficient noise immunity, manufacturability. An analysis of existing discrete optoelectronic displacement transducers shows that to solve the above problems for monitoring and control, optoelectronic discrete displacement transducers based on hollow and fiber light guides are the most acceptable. In this regard, the improvement and development of optoelectronic discrete displacement transducers based on hollow and fiber light guides is an urgent task.