sulation Resistance Tester with Test Range 100kΩ to 5TΩ Current Limit 10mA                                Model      TH2683A      TH2683B              Resistance Test              Test Range      100kΩ -10TΩ      100kΩ -5TΩ              Test Accuracy      I＞10nA:±2%,  I≤10nA:±5%              Current Test              Test Range      Range1: 100uA - 1mA, input internal resistance: 10kΩ, Range2: 10uA - 100uA, input internal resistance: 10kΩ, Range3: 1uA - 10uA, input internal resistance: 10kΩ, Range4: 100nA - 1uA, input internal resistance: 10kΩ, Range5:10nA - 100nA, input internal resistance:   1MΩ, Range6:1nA - 10nA, input internal resistance: 1MΩ.              Test Accuracy      ±2%+3pA              Voltage Test              Range      1V  - 1000V      1V  - 500V              Accuracy      Voltage≥10V:±1%+1V, Voltage＜10V:±10%+0.1V.              Current Limit      10mA              Switch      Turn   it on or off manually on the front panel, or through the built-in timer   control or remote control.              Charging Time      0～999s, programmable.              Test Delay      0～999s, programmable.              Test Speed      Fast:≤30ms, Slow:≤60ms.              Comparator Function      4 bins: 3-bin pass, 1 bin fail.              Range Mode      Auto, Hold.              Storage      Internal   storage, USB.              Standard Interface      RS232C,USB HOST, USB DEVICE, HANDLER.              General Technical Parameter              Working Humidity      10℃～40℃，≤90%RH              Power Requirement      90～121V AC (60Hz)   or 198～242V AC (50Hz)              Power      ＜50VA              Volume      235mmX104mmX360mm              Weight      3.6kg