35-0115 Piezo Buzzer 12V by RVFM (Rapid) Dimensions: 31.5mm dia ( excl. fixing tabs) x 13.5mm height. Frequency: 2700 HZ (2.7KHz) = continuous sharp shrill ! Output: 90 dB Voltage: 12Volts DC Rapid legacy stock code: 35-0115 Individually tested: YES Great for motorcycle / car or boat warning alarms as no external components needed.