TPB-1407 Ø13.8*7.5mm Piezo Buzzer HideTechnical Data Rated voltage 12VDC Operating Voltage 3-16VDC Max.Rated Current 7mA Min.S.P.L.(@10cm) 83dB Resonant Frequency 4.0 ±0.5KHz Tone Nature Single Operating Temp -20~+70°C Weight 1g