A module for detecting a liquid level, comprising: - a float comprising at least one magnet, the float being able to be in contact with the liquid and to rise when the liquid level rises in the module, - a contactless detection member that is able, on the one hand, to cooperate electromagnetically with said at least one magnet of the float when the latter has risen to a predetermined level and, on the other hand, to establish contact in an electric circuit so as to allow the passage of a current in the circuit, the contactless detection member being separated from the float by a tight wall (10a2) along which the float is able to move by rising or lowering as a function of the liquid level in the module, the tight wall forming an enclosure (10a2), the float being mounted sliding axially around the enclosure, said module in turn comprising all the elements that perform the function of detecting the liquid level in the module, said module being characterized in that it comprises - a unit for wireless emission of an electromagnetic signal that is connected to the electric circuit and that is able to transmit such a signal remotely as a function of the establishment of a contact in the electric circuit, said module in turn comprising all the elements that perform the function of remote transmission of a signal, and in that the tight wall forms an enclosure (10a2) that is upwardly open for the placement of the contactless detection member inside the enclosure (10a2) and that is downwardly closed by a bottom. - a float comprising at least one magnet, the float being able to be in contact with the liquid and to rise when the liquid level rises in the module, - a contactless detection member that is able, on the one hand, to cooperate electromagnetically with said at least one magnet of the float when the latter has risen to a predetermined level and, on the other hand, to establish contact in an electric circuit so as to allow the passage of a current in the circuit, the contactless detection member being separated from the float by a tight wall (10a2) along which the float is able to move by rising or lowering as a function of the liquid level in the module, the tight wall forming an enclosure (10a2), the float being mounted sliding axially around the enclosure, said module in turn comprising all the elements that perform the function of detecting the liquid level in the module, said module being characterized in that it comprises the contactless detection member being separated from the float by a tight wall (10a2) along which the float is able to move by rising or lowering as a function of the liquid level in the module, the tight wall forming an enclosure (10a2), the float being mounted sliding axially around the enclosure, said module in turn comprising all the elements that perform the function of detecting the liquid level in the module, said module being characterized in that it comprises - a unit for wireless emission of an electromagnetic signal that is connected to the electric circuit and that is able to transmit such a signal remotely as a function of the establishment of a contact in the electric circuit, said module in turn comprising all the elements that perform the function of remote transmission of a signal,