SMD piezo buzzer,Internally driven type Rated Voltage: 6VDC Operating Voltage: 3-12VDC Rated Current : 12mA Max. S.P.L.(@10cm): 100dB Min at Rated Voltage at 10cm Resonance Frequency : 3.6±0.5KHz Tone : Continuous Operating Temp: -30~+85°C Weight: 5.5g