A switch device is provided for a wall element, such as a door, flap, or window, in particular for a vehicle, having a first housing part, which is positionable or positioned in or on the wall element, having a second housing part, which is particularly disc-shaped or plate-shaped, having a sealing apparatus, which is positionable or positioned at least between the first housing part and the second housing part and fixes the first housing part and the second housing part on one another so they are movable relative to one another, and having a switch element, which is positionable or positioned between the first housing part and the second housing part and can be actuated by a movement of the second housing part relative to the first housing part.