DT830 digital multimeter is three and a half LCD mini digital multimeter . It can measure AC and DC and AC voltage , DC current , resistance, capacitance , transistors value , the diode turn-on voltage and short circuit , etc., the band consists of a rotary switch to change the measurement function and range , a total of 30 stalls .The multimeter maximum display value 1999, can automatically display the "0" and polarity , overload display "1" or "-1" , when the battery voltage is too low to display "" symbol ,Two . Technical characteristics1 . Measurement RangeAC and DC voltage ( AC frequency of 45Hz ~ 500Hz);Ranges are 200mV, 2V, 20V and 1000 five-speed , DC accuracy of (0.8% +2 word reading ) below the AC accuracy of (1% +5 word reading ) ;Input impedance, DC file for 10M, exchange files to 10M, 100PF.AC and DC currentsRange were 200A, 2mA, 200mA and 10A five-speed DC accuracy (1.2% +2 word reading ) , AC accuracy of (2.0% +5 word reading ) , the maximum load voltage of 250mV ( AC RMS ) .resistance:Ranges are : 200, 2k, 200k, 20M and 20M six files. Accuracy is (2.0% +3 word reading ) .diode conduction voltage:Range is 0 ~ 1.5V, the test current is 1mA 0.5 mA.transistor value detection :Test conditions : VCE= 2.8V, IB= 10A.short circuit detection :Test circuit resistance