... 2.Accuracy:0.01ohm,1V 3.Data memory:400sets 4.Data upload:RS232 ETCR3000 Digital Earth Ground Resistance Meter ... and durable. Wire resistance verification, Data upload with RS232, Alarm function, Software monitoring, Data memory: 400 sets, Resistance range ... Between circuit and enclosure)Electromagnetic FeaturesIEC61010-4-3,Wireless frequency electromagnetic field≤1V/mProtection TypeIEC61010-1,IEC1010- ...