Electrical switching device has lateral actuating

This device comprises: a housing (1); a first (31) and second (27) conductive tracks; a first conductive dome (3) elastically deformable so as to pass to a configuration in which it establishes an electrical contact between the first (31) and second (27) tracks; and an actuator having an operating member (9) mounted in the housing for sliding (X) orthogonal to the deformation axis (Z). Further comprising: a third conductive track (34); and a second conductive dome (5) superimposed on the first (3) elastically deformable so as to pass, under the effect of an actuating pressure, successively from a rest configuration in which it is in contact power with the third track (34) only to a partial deformation of configuration, in which it establishes an electrical contact with the first dome (3), and a maximum deformation configuration corresponding to the configuration of maximum deformation of the first dome (3) .The use with a camera triggering device.