ITEM NAME:10pcs 20mm Piezo Elements Buzzer Sounder Sensor Trigger Drum Disc+ wire copper Z a.imagelink a:hover.imagelink {color:#db3606;.Piezo Discs For Buzzer Pressure Sensor Speaker DIY. 10x 20mm buzzer sensor. Material:Copper,PVC. Speech and music applications. Wide tonal response. Color:see picture.
