Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification (IEC 61020-1:2019); German version EN IEC 61020-1:2019— 98 стр.
Push-button switches with pressure point for printed boards; type A (12,5 Ч 12,5) mm; type B (10 Ч 10) mm; dimensions, ratings, requirements, tests— 10 стр.