... high brightness 1.Product Name:21000 Count Bench Multimeter(80)21,000/51,000- count display Large VFD dual ... dBm synchronously displayed Measurement speed up to 15 times/second (80), and 30 times/second (81)DCV measurement accuracy up ... , frequency, period, conduction, dioxide Math function %, dBm, REL RangeAuto, Manual DisplayVFD, dual display Reading mode Single display:all measurement parametersDual ...