This is small piezo ceramic beeper. The frequency is approximately 3.2 kHz. Drive with 4 - 6V DC. Current consumption approximately 25 mA. Sound level is 87 dB.
This beeper has a waterproof seal that protects it during manufacturing. The seal must be removed before use.
2014-11-04: switched from the grey model to the black as on picture and datasheet.
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