SY-DT420-N1212D002,SY-DT420-N5555D002,SY-DT420T-N2727D002-P,SY-DT420T-N1414D002,SY-DT420T-N0202D002,SY-DT420T-N1212D002,SY-DT420T-N5555D002,DT420-N2727D002-P,DT420-N1414D002,DT420-N0202D002,DT420-N1212D002,DT420-N5555D002,DT420T-N2727D002-P,DT420T-N1414D002,DT420T-N0202D002,DT420T-N1212D002,DT420T-N5555D002
SY-DT420-N2727D002-P,SY-DT420-N1414D002,SY-DT420-N0202D002,DT420智能雙回路數顯表