Siemens keyswitch, C, 22 mm, round, plastic, lock number S-10-CG, with 2 keys, 2 switch positions O-I, latching, 10:30h/13:30h, key removal O+I, with holder, 1 NO+1 NC, spring-loaded terminal, with laser inscription, in upper case and lower case, always upper case at the beginning of the word