Magnetic Buzzer Self drive type KWX-G1209A Product ID KWX-G1209A Rated Voltage 9VDC Operating Voltage 7~ 12VDC Max.Rated Current 30mA/ 12VDC Resonant Frequency 2300± 300Hz Min.Sound Pressure Level 85dB/ 10cm Operating Temperature -20~ + 70° C D( mm) Ø 12 H( mm) 9.5 weight 2g