The decoder circuit is also easy to construct. You will have to physically wire (using alligator clips for instance) the TONE out pinout from the generator to the TONE in pinout of the decoder.
解码器电路也非常易于搭建。你只需要发生器上的TONE OUT输出脚与解码器的TONE IN输出脚之间手动绕(使用鳄鱼夹会较快)上导线即可。
These modules include the ring detection module, call filtering module, dual-tone multi-frequency decoder modules, voice prompt module and microprocessor controlled driver module.
这些模块包括振铃检测模块、来电过滤模块、双音多频解码模块、语音提示模块和单片机控制驱动模块。
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