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Extremely loud and small buzzer

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Bchildress405

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I am looking for an extremely loud buzzer for a personal project. I'm looking for something that is about 130 db at the source. Ideally, I would like to find something like what is used in all the personal defense keychains. The buzzer needs to be small and the voltage needs to be less than 20 volts. Any help is greatly appreciated
 
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