Russian Federal Agency for Technical Regulation and Metrology has issued the Certificate of type approval for measuring instruments for programmable logic controllers and automation platform K-4000. Currently, PLC K-4000 can truly be considered as one of the best products in the category of import substitution in Russia. The distinctive feature of K-4000 is the use of domestic components and domestic professional software for automatic process control systems. Domestic hardware components enable creating a programmable logic controller that meets all modern requirements. PLC K-4000 has a number of advantages by such important operational and economic indicators as the recovery time, repair capability, cost of maintenance and service, ability to build complex control systems on the components of the same manufacturer. In combination