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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Darkness

Member Since: July 20, 2010

Country: United States

  • How do you drive these? By feeding it at a certain frequency around 2kHz?
    How loud are these? I need to generate something like a whistle tone (so not constant frequency) that should be audible outdoor at around 50 meters.

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