Abstract: A key module has a housing and a tappet arranged in the housing. The tappet is movable in a linear manner between an upper stop position and a lower stop position in a manner limited by an upper stop and a lower stop, wherein an elastic element arranged in the housing pushes the tappet into the upper stop position, and wherein an actuating force exerted by a user pushes the tappet into the lower stop position and in the process reversibly compresses the elastic element. To reduce impact noises, the lower stop is formed by a first damping element and the upper stop is formed by a second damping element. The slip-on element has a carrier element to which a first damping element for reducing impact noises at the lower stop and a second damping element for reducing impact noises at the upper stop are attached.