Switch device having a spacer organizing contact tails

A casing, in which a plurality of contacts are fixed, an operation element which is arranged so as to be able to move in translation in the casing, a conductive dome-like member which is arranged in the casing and which is resiliently deformable under the action of the displacement of the operation element between a first state and a second state of commutation, the light source is fixedly joined to the casing, the switch device further defines a spacer which connected the casing for fixing the tail of the contacts so as to prevent the contacts from distorting.