Dear Sales Manager, we are OEM factory and looking for 5V DC Buzzer, Qty:50K Spec. Working voltage: 1.5 to 24VDC Current Consumption: less than 10mA at 12V DC Output more than 100dB at 12V DC Output Frequency 2.7~3KHz Size, (45*38*32x1.8) Awaiting for your fast reply