<p>The device i.e. push-button (20), has a return spring (205) stressed by force by an actuating element (200) in a direction parallel to a main axis. A switching assembly (50) comprises a plunger arranged to be actuated by the actuating element. A wireless transmitter module is provided with an antenna (503) for sending a message to a receiver module in an event of an action on the plunger. The antenna is arranged prominently on the switching assembly. The actuating element comprises a part forming a hollow axial internal space (201) inside which the antenna is housed.</p>
