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Electret Condenser ID

WindburnWindburn Registered User regular
I'm trying to replace a potentially faulty electret condenser microphone in a baby monitor. What does the number 2 mean on the component?
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Is there any other way I can determine the standard operating voltage and impedance of the part? When I measure the impedance I get about 0.9 kOhm, but if the part is bad, then that value is incorrect.

Thanks.

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