Modulo decodifica e codifica segnale DTMF V1 dual tone 5V multifrequenza

DTMF V1 is a dual tone multi-frequency decoding encoding module. Then converted to DTMF code. Dual tone multi-frequency code decoding;. 5V:power positive Interface (5V). (2)signal input interface J1: 3.5MM audio input interface.

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