This inexpensive electret microphone is perfect for a wide range of electronics projects. Traditional audio capture is only the beginning. Use as a vibration transducer, or drive it with a signal to use as a miniature speaker. Wire up a few of these microphones with a microcontroller to make a sonic range finder. The possibilities are endless.

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Specifications

sensitivity (0 dB= 1 volt/pascal)	-44±3 dB
standard operating voltage	3.0 volts D.C.
maximum operating voltage	10 volts D.C.
maximum current consumption	0.5 mA
impedance	2.2 kΩ
signal to noise ratio	60 dB
internal capacitor	33 pF
outside diameter	8.5 mm
thickness	3.5 mm