電梯對講機聲音太小如何將喇叭聲音變大聲 - 工作
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By Hedy
at 2015-06-14T00:00
at 2015-06-14T00:00
Table of Contents
電梯位置與管理室約100公尺,相互談話聲音很小,我想在對講機喇八加上擴大器,請問有何電子套件能運用。感恩
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工作
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By Rachel
at 2015-06-16T11:35
at 2015-06-16T11:35
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By Kumar
at 2015-06-14T20:21
at 2015-06-14T20:21
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