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  • 07/12/2019

    I did a simple test with a 9V battery. You have to connect the GND pin to the negative battery terminal and both the VCC and IN pins to the positive battery terminal to get a sound. That might be obvious to some but it wasn't to me. Anyway, all three passed the test.

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  • 20/02/2019

    Tutto ok

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  • 26/07/2018

    OK and works

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