... 0.05mA 4.RS232 ETCR2100C+ Clamp on ground resistance tester . Introduction ETCR new Clamp Earth Resistance Tester is another ... uploaded to the computer through RS232 interface and data wire, Then generate report filesAccessoriesMeter: 1 piece, Test ... .productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); ETCR2100C+ Clamp on ground resistance tester ----ISO,CE,OEM,ODM.RS232 Interface