... Bandwidth 3. RS232 interface 4.High quality with CE certification Digital Mutimeter TH1942 4 1/2-digit is voltage/current/resistance ... AC+I DC, V AC+Hz, I AC+Hz, Readout+%, Readout+dBm, Readout+Max/MinTrigger modeINT/MAN/BUSReading holdTo find out the best ... , with ALARM at HI/LO (selectable)Communication interface RS232C, SCPI Digital Multimeter TH1942