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SparkFun will be closed for Labor Day (9/7/2015). Orders will resume shipping out on Sept 8th. Have a great weekend!

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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