Replex is a fire-fighting digital twin.We studied a lot how to improve the performance of fire protection systems and looked for the causes of the malfunction. The malfunction of fire protection systems is 100% dependent on the human factor.The composition of the Replex system:• digital twin of fire safety of protected objects;• electronic operational log;• elimination of the human factor in the formation of claims for malfunction;• CRM-system for the operation of fire-fighting systems;inventory - accounting for fire-fighting equipment;• information model of fire safety based on BIM technologiesThe main purpose: the intelligent fire safety system Replex is the integration of technologies, production processes and management decisions in a single information spaceThe system is an electronic assistant in the implementation of the provisions established by the new national standardsThe importance of an intelligent system: technical means of fire safety can be idle for months, society needs to be sure that they will work correctly at the right time