On the basis of no outer direct flow power source, tow-wire passive LED local displaying unit realizes LED local displaying of industry parameter which tow-wire transmitter inspects.
二线无源led现场显示单元是指在不外接直流电源的前提下，实现二线制变送器检测到的工业参数LED现场显示。
On the basis of no outer direct flow power source, tow-wire passive LED local displaying unit realizes LED local displaying of industry parameter which tow-wire transmitter inspects.
二线无源led现场显示单元是指在不外接直流电源的前提下，实现二线制变送器检测到的工业参数LED现场显示。
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