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- 家居智能控制系统,基于国际双音频通信标准DTMF(DualToneMultiFrequency)通信方式,即具有接口简洁,成本低廉且可靠性高的特点。-Home Automation control system, dual audio communication based on international standards DTMF (DualToneMultiFrequency) communication, which has the interfaces simple, low cos