1.Bench 5 1/2 digital multimeter 2.100kHz Bandwidth 3.True-RMS AC voltage and current ... certification The TH1951 is a high speed,high accuracy , 119,999 counts digital multimeter that meets the measurement needs of voltage,current and resistor ... , with ALARM at HI/LO (selectable)Communication interface RS232C, SCPI Digital Multimeter TH1951