... 3. RS232 interface 4.High quality with CE certification Digital Mutimeter TH1942 4 1/2-digit is voltage/current/resistance tester with ... best choice.Having VFD dual-display with high brightness, TH1942 can synchronously display measurement parameters, such as ... function%, dBm, RELRangeAuto, ManualDisplayVFD,dual displayReading modeSingle display: all measurement parametersDual display: V AC+V DC, I ...