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Waveshare 9534 Sound Sensor LM386 Raspberry Pi 4 Aluminum Case Face shields for everyone Front This spanner set is Face shields for everyone Front line staff of Hospitals Power supply: DC 12V input USB powered the module is compatible with Arduino the module amplifies microphone signals up to 200× and provides both analog (AOUT) and digital (DOUT) outputs for flexible integration with microcontrollers and embedded systems
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