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MT8870 DTMF Voice Decoding/Calling Module

Description DTMF signal is the telecommunication signal over the analog phone signal, this module can recognized the button pressed signal from the analog phone signal. Onboard DTMF chip MT8870 Onboard voice input interface/jack Onboard five LED indicators for easy viewing output state Chips are pin all brought out PCB Size: 26.5 (mm) x24.5 (mm)
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