A module for detecting a liquid level, which comprises: - 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, - at least two detection members (18a, 18b) which are able, on the one hand, to cooperate electromagnetically with said at least one magnet of the float when the latter has risen to a first predetermined level and, on the other hand, as a function of this cooperation, to establish a contact in an electrical circuit of the module so as to allow the passage of a current in the circuit, said float also being able to move away from the tight separating wall when the liquid level decreases in the module to reach a second predetermined level in which said at least one magnet of the float no longer cooperates electromagnetically with said at least two detection members (18a, 18b), said at least two detection members being separated from the float by a tight wall which is positioned above the float, irrespective of the level of the float in the module, a protuberance in the form of a rod extending downward from the tight wall to which it is connected and moving away from the latter, the float forming an annular belt around the rod and the magnet being generally in the form of a toroid, said at least two detection members being positioned at the same measurement around said tight wall and arranged along said wall so as to extend over a zone which has the greatest possible spatial overlap with said at least one magnet of the float located below the wall, and - a unit for wirelessly transmitting an electromagnetic signal which is connected to the electrical circuit and which is able to send such a signal remotely based on the establishment of a contact in the electrical circuit. - 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, - at least two detection members (18a, 18b) which are able, on the one hand, to cooperate electromagnetically with said at least one magnet of the float when the latter has risen to a first predetermined level and, on the other hand, as a function of this cooperation, to establish a contact in an electrical circuit of the module so as to allow the passage of a current in the circuit, said float also being able to move away from the tight separating wall when the liquid level decreases in the module to reach a second predetermined level in which said at least one magnet of the float no longer cooperates electromagnetically with said at least two detection members (18a, 18b), said at least two detection members being separated from the float by a tight wall which is positioned above the float, irrespective of the level of the float in the module, a protuberance in the form of a rod extending downward from the tight wall to which it is connected and moving away from the latter, the float forming an annular belt around the rod and the magnet being generally in the form of a toroid, said at least two detection members being positioned at the same measurement around said tight wall and arranged along said wall so as to extend over a zone which has the greatest possible spatial overlap with said at least one magnet of the float located below the wall, and - a unit for wirelessly transmitting an electromagnetic signal which is connected to the electrical circuit and which is able to send such a signal remotely based on the establishment of a contact in the electrical circuit.