基本功能 量程 型號UT501UT502OutputVoltage250V/500V/1000V 10%500V/1000V/2500V 10%NiminalCurrent250V/500V1mA 10%500V/1000V1000V/2500VShortCircuitCurrent<2mAInsulationResistanceMeasurement 3%+5 3%+10.01G VoltageMeasurement1000VDC (2%+3)750V AC特殊功能AutoRanging LowBatteryDisplay AlarmLightDisplay DisplayBacklight AlarmBuzzer