Hello. Welcome to Futurlec. The electronic components Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. BUZZERS BUZZER24 - 24V Piezo Buzzer Photograph Features Voltage: 24Vdc. Kingstate Buzzer - KS-6624 Dimensions: 25mm Diameter, 16mm High, 32mm between mounting holes