MB27A Piezo Buzzer

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MB27A Piezo Buzzer specification sheet: Minimum Sound Level 85 dB; Oscillation Frequency 4 kHz ± 500 Hz; Operating Voltage 1.5 to 27 VDC; Current Consumption Maximum 15 mA; Tone Continuous; Mounting Flange Type; Diameter 32 mm; Height 16.5 mm