Pfeifenschalter Mikrofon Verstärker Schalter Erkennung LM393 für Arduino DIY Kit
5,07 €
Main chip: LM393, electret microphone. When there is sound detected, the signal indicator will light up. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.
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