| 摘要 |
Each key (10) actuates an elastically deformable dome (7) carrying a first contact (18) and formed on a first part (3) of a transparent connecting film, in order to move this first contact (18) into abutment against a second (19) associated contact carried by a second part (4) of the film, facing the first contact (18). The two contacts (18, 19) associated with a key (10), beneath which there is a light source (11), are interposed between the key (10) and the source (11), the two contacts (18, 19) allowing through the light from the source (11). The invention applies particularly to telephone sets. <IMAGE>
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