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Differential pressure is an important technological parameter. To date, the lion's share of research in this area has focused on the development and improvement of differential pressure transmitters. This article is devoted to developing a differential pressure transmitter with unified electronics unit. To achieve this objective, modern methods and technologies were used in the development of the electronics unit of the pressure transmitter. The Programmable System-on-Chip (PSoC) technology was used to develop the electronics unit. Due to the use of PSoC technology, it was possible to increase the noise immunity of the developed differential pressure transmitter, as well as provide an unparalleled combination of flexibility, integration analog and digital functionality. The operational principle of the developed differential pressure transmitter is based on the dependence of the elastic deformation of the sensitive element of the transmitter on the pressure. A strain gauge and a differential capacitive sensor were considered as sensitive elements of the proposed differential pressure transmitter.