Specification for Button; rectangular; black; Application:1446.,1840.,1845.,1852.
| Application | 1446., 1840., 1845., 1852. |
| Type of switch accessories | button |
| Button shape | rectangular |
| Key button colour | black |
| Application | 1446., 1840., 1845., 1852. |
| Type of switch accessories | button |
| Button shape | rectangular |
| Key button colour | black |