A plug (1) for a profiled safety edge section (2), comprising a first contact element for a first wire (3) of the profiled safety edge section (2), a second contact element for a second wire (4) of the profiled safety edge section (2), and an insertion nose (16), wherein the two contact elements are received in the insertion nose (16). The first contact element is a first support (8) with a first claw (9), and the second contact element is a second support (10) with a second claw (11).

A functional component having a button function includes a support component, a film, and an electrical switching element. The support component has a recess. The film covers the recess. The electrical switching element is situated below the recess and is actuatable by pressure being exerted on the film in the area above the recess. A ring-shaped or hollow cylindrical body is situated along an inner edge surface of the recess and is in contact with the film.

A functional component having a button function includes a support component, a film, and an electrical switching element. The support component has a recess. The film covers the recess. The electrical switching element is situated below the recess and is actuatable by pressure being exerted on the film in the area above the recess. A ring-shaped or hollow cylindrical body is situated along an inner edge surface of the recess and is in contact with the film.

A keyboard device includes a key structure, a base plate and a switch circuit board. The switch circuit board includes a soft covering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the switch circuit board. An accommodation space is formed between the soft covering element and the switch circuit board. The stabilizer bar is inserted into the accommodation space and connected with the switch circuit board. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the switch circuit board, the keyboard device is capable of reducing noise.

A keyboard device includes a key structure, a base plate and a switch circuit board. The switch circuit board includes a soft covering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the switch circuit board. An accommodation space is formed between the soft covering element and the switch circuit board. The stabilizer bar is inserted into the accommodation space and connected with the switch circuit board. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the switch circuit board, the keyboard device is capable of reducing noise.