digital multimeter test bench 50 kinds of measuring function High ... -232 interface VC8145 4 7/8Bench-Type DMM test bench DMM 80000 digit Feature:1,Large LCD,High contrast ... TEMP,diode and Continuity measuring function etc;4,Frequency measuring can rearch 80MHz;5,Standard function generator:18 ... ,AC measuring adopt High accuracy RMS,Widely measuring and AC+DC function,can measuring the accuracy virtual ...