The authors propose the development of a system designed to control microclimate parameters at the place where grain is stored in a polymer molten bubble, diagnose changes in it and transmit information to the control center. The system is a software and hardware complex that combines grain storage tanks with a system for remote control and diagnostics of the main microclimate parameters, such as the level of oxygen O 2 , the level of carbon dioxide CO 2 , temperature and relative humidity. The system also monitors the integrity of the material of the melt bubbles by indirect signs.