| 摘要 |
The switch comprises a pushbutton (4), movable in a body (1) against a force of a spring. The pushbutton is transparent to the light source radiation and is of rigid material with a through groove. The groove is engaged by the end of an elastic, bellows-shaped protective element (8) in a flexible and removable manner, while the other end of the element is flexibly fixed to the body continuous flange via a groove in the other end of the element.
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