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

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

AliExpress