Dual Display Digital Multimeter    GDM-8246 (50000 Counts) FEATURES： 50000 counts DMM Multi-function ACV, DCV, ACA, DCA, R, C, Hz, Continuity Beeper, Diode, Test, Max/Min, REL, Hold,  dBm, Compare Dual Display Indicate ACV and Hz or DCV(ACV) and  dBm Manual or Autoranging 0.02% DCV Accuracy ACV Measuring Frequency up to 100kHz 20A Current Range With High Energy Fuse Protection Auto-Recall the setting Upon Power ON AC True RMS or AC + DC True RMS RS-232 Interface Option: GPIB Interface   Data Sheet   User Manual   Programmer Manual   SPECIFICATIONS             DC Voltage        Range 500mV, 5V, 50V, 500V, 1200V 5 ranges        Accuracy +(0.02% rdg + 2 digits)        Input Impedance 10MΩ       AC Voltage True RMS (AC or AC+DC True RMS)        Range 500mV, 5V, 50V, 500V, 1000V 5 ranges        Accuracy 500mV ~ 1000V 5 range 20Hz ~ 45Hz:+(1% rdg + 10 digits)     45Hz ~ 2kHz:+(0.3% rdg + 30 digits)     2kHz ~ 10kHz:+(0.4% rdg + 50 digits)   500mV ~ 500V 4 range 10kHz ~ 20kHz:+(0.5% rdg + 50 digits)   500mV ~ 50V 3range 20kHz ~ 50kHz:+(2% rdg + 20 digits)     50kHz ~ 100kHz:+(5% rdg + 50 digits)        Input Impedance 10MΩ       DC Current        Range 500µA, 5mA, 50mA, 500mA, 2A, 20A 6 ranges        Accuracy 500µA ~ 500mA 4 range:+(0.05% rdg + 3 digits) 2A ~ 20A 2 range:+(0.2% rdg + 5 digits)       AC Current True RMS (AC or AC+DC True RMS)        Range 500µA, 5mA, 50mA, 500mA, 2000mA, 20A 6 ranges        Accuracy 500µA ~ 500mA 4 range 45Hz ~ 2kHz:+(0.5% rdg + 15 digits)        2kHz ~ 10kHz:+(1% rdg + 15 digits)       10kHz ~ 20kHz:+(2% rdg + 15 digits)    2A ~ 20A 2 range 45Hz ~ 2kHz:+(0.5% rdg + 15 digits)       Resistance        Range 500Ω, 5kΩ, 50kΩ, 500kΩ, 5MΩ, 20MΩ 6 ranges        Accuracy 500Ω range:+(0.1% rdg + 4 digits)   5kΩ~ 500kΩ 3 range:+(0.1% rdg + 2 digits)   5MΩ range:+(0.2% rdg + 2 digits)   20MΩ range:+(0.3% rdg + 2 digits)       Diode Test The one ranges can check the forward voltage of diode. Maximum forward voltage 1.5V. open voltage 2.5V.       Capacitance        Range 5nF, 50nF, 500nF, 5µF, 50µF 5 ranges        Accuracy +(2% rdg + 4 digits)       Frequency        Input Level       (Sine Wave) mV range: 10Hz ~ 50kHz: >120mV ; 50k ~ 150kHz: >200mV 5V~50V range:10Hz ~ 200kHz: >1V 500V range: 20Hz ~ 1kHz:>12V                          Continuity Beeper < 5Ω       NMRR > 60dB       CMRR > 90dB       Operating Mode Auto Range / Manual       Other Functions Max, Min, dBm , REL, Hold, Compare, Set RECALL       Display Dual Display 0.4", 0.5", 7 segment LED display       Power Source AC 100v / 120v / 220v / 230v +10%, 50/60Hz       Accessories Power cord x 1, Instruction manual x 1, Programming manual x 1, Test lead GTL-117 x 1       Dimensions & Weight 251(W) x 91(H) x 291(D) mm, Approx. 1.86kg