The communication method applies to a home-automation installation comprising at least one sending element, a self-powered receiving element and an element for substituting for the receiving element. The method is such that, when the receiving element is in a sleep mode, the substitution element receives and records information sent by the sending element for the attention of the receiving element and such that, when the receiving element is no longer in sleep mode, the substitution element sends the information for the attention of the receiving element.