... high brightness 1.Product Name:21000 Count Bench Multimeter(80)21,000/51,000- count display Large ... Standard RS232C communication interface providing Convenient system communication2.Measurement Function:Measurement parameters DC voltage, AC voltage, DC current ... AC current, resistance, frequency, period, conduction, dioxide Math function %, dBm, REL RangeAuto, Manual DisplayVFD, dual display Reading ...