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Character LCD 20x4
the output port connect to the input port of the second one
This comes in handy with repairs ranging from cellphone to small home appliances
GND PIN to GND on your device
(1) 5mm Shim
MT8870 DTMF Voice Decoding Module Potentiometer Character LCD 20x4The MT8870 DTMF Decoding Module is a compact and efficient device designed to decode Dual Tone Multi Frequency (DTMF) signals from audio inputs, such as those generated by pressing keys on a telephone or mobile phone keypad. This module converts DTMF tones into corresponding digital outputs, making it ideal for applications in robotics, home automation, and security systems requiring remote control via telephone. Built around the reliable MT8870 IC,
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