| 摘要 |
The invention relates to an electromechanical signal generating device, which is intended for use in battery-operated devices that are placed in a closed housing having a front plate (1) enabling access by the user of said device. The device according to the invention comprises a piezoceramic disk (4) that is affixed on the back of the front plate (1), wherein the piezo disk (4) emits electric and acoustic signals. |
