10pcs/lot Piezoelectric Piezo Ceramic Wafer Plate Sounder Buzzer Loudspeaker Sensor Dia 12MM/15MM/18MM/20MM/27MM/35MM/50MM/23MM

       Piezoelectric ceramic buzzer is a kind of device for piezoelectric ceramic application. The more common ones are titanium and piezoelectric ceramics (pzt) prepared by sintering with zirconium and lead oxides. Since the human ear is most sensitive to 3khz audio signals, the resonance frequency of the buzzer is usually designed during production. Around 3khz. In order to improve the low frequency response, a dual diaphragm structure is generally used.