Abstract: Device for indicating the residual life of industrial products, comprising means for sensing one or more environmental variables correlated with the preservation of the product, positioned on the interface between the product and the environment; processing means for acquiring the data read by the sensor means, entering these data into a suitable program for evaluating the residual life of the product on the basis of these data, and returning the data relating to the residual life of the said product; and means of displaying the data concerning the residual life of the product, controlled by the said processing unit.