Method for managing the activation of a reception chain of a radio module receiving at least one message consisting of a preamble and of at least one frame, characterized in that the method comprises the steps of: - placing the reception chain of the radio module in a reception mode for a first duration, - determining whether a predetermined number of bytes having a predetermined value is received during the first duration of placing the reception chain of the radio module in the reception mode, - maintaining the reception chain of the radio module in a reception mode for a second duration, less than or equal to the first duration, if the predetermined number of bytes having a predetermined value is received during the first duration, - determining whether a predetermined number of bytes included in the preamble having a predetermined value is received during the second duration of placing the reception chain of the radio module in the reception mode, - placing the reception chain of the radio module in a standby mode for a third duration if the predetermined number of bytes having a predetermined value is not received during the first duration, the third duration being at least two hundred times longer than the first duration and equal to or less than the duration of the preamble, - placing the reception chain of the radio module in a standby mode for the third duration if the predetermined number of bytes having a predetermined value is not received during the second duration, - determining, if a predetermined number of bytes included in the preamble having a predetermined value is received during the second duration of placing the reception chain of the radio module in the reception mode, the remaining duration of the preamble to be received, - placing the reception chain of the radio module in a standby mode for the determined remaining duration, - placing the reception chain of the radio module in a reception mode for a fourth duration, the fourth duration being equal to the duration of reception of a predetermined number of frames following the preamble. - placing the reception chain of the radio module in a reception mode for a first duration, - determining whether a predetermined number of bytes having a predetermined value is received during the first duration of placing the reception chain of the radio module in the reception mode, - maintaining the reception chain of the radio module in a reception mode for a second duration, less than or equal to the first duration, if the predetermined number of bytes having a predetermined value is received during the first duration, - determining whether a predetermined number of bytes included in the preamble having a predetermined value is received during the second duration of placing the reception chain of the radio module in the reception mode, - placing the reception chain of the radio module in a standby mode for a third duration if the predetermined number of bytes having a predetermined value is not received during the first duration, the third duration being at least two hundred times longer than the first duration and equal to or less than the duration of the preamble, - placing the reception chain of the radio module in a standby mode for the third duration if the predetermined number of bytes having a predetermined value is not received during the second duration, - determining, if a predetermined number of bytes included in the preamble having a predetermined value is received during the second duration of placing the reception chain of the radio module in the reception mode, the remaining duration of the preamble to be received, - placing the reception chain of the radio module in a standby mode for the determined remaining duration, - placing the reception chain of the radio module in a reception mode for a fourth duration, the fourth duration being equal to the duration of reception of a predetermined number of frames following the preamble.