| 摘要 |
The invention relates to a pulse switch whose housing (1) comprises a button pad (3) with means for activating one contact chosen from a predetermined number of possible contacts; and a thumbwheel (3) with a position transmitting means and an enabling means (16), enabling elements (15) which can be activated by the thumbwheel (3) enabling means (16) and a means of transmitting a selection with which a contact can be contacted by means of the position transmitting means. The enabling elements comprise a round domed platelet (15), which contacts an outer enabling track and an inner enabling track with a circumferential ring. This means (16) of the thumbwheel (3) is a projection (16) with which a central section of the platelet (15) can be moved in order to come into contact with the inner enabling track.
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