Method for communicating information by infrared radiation between a control command transmitter for a motorized product for closure, privacy or solar protection in a building and a control command receiver, comprising the transmission of a communication frame including: a preamble signal consisting of the repetition of pulses of a first type, and a data signal, the data being translated into the form of pulses of a second type, wherein the preamble signal and the data signal are modulated at the same frequency and wherein the data signal is separated from the preamble signal by a signal-free period having a duration of greater than twice the maximum duration separating two successive pulses of the second type.