... . RS232 interface 4.High quality with CE certification Digital Mutimeter TH1942 4 1/2-digit is voltage/current/resistance tester with ... a best choice.Having VFD dual-display with high brightness, TH1942 can synchronously display measurement parameters, such as AC/DC voltage ... at HI/LO (selectable)Communication interface RS232C, SCPI Digital Multimeter TH1942