1PCS DC 3.7V-12V LM386 Electret Microphone Power Amplifier Board Gain 200 Times
1,93 €
1pcs x LM386 Electret Microphone Power Amplifier Board. Practical application: Deafness hearing aids: board connected to the microphone, power, headphones, is a good deaf hearing aids. Board Size(approx): 25mm x 25mm.
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