Further two Categories :
1) DIT-03 Digital Insulation Resistance Tester (1000V)
Voltage : 50V, 100V, 250V, 500V, 1000V
Resistance : 0.01MΩ ~10GΩ
2) DIT-05 Digital Insulation Resistance Tester (2500V)
Voltage : 250V, 500V, 1000V, 2500V
Resistance : 0.01MΩ ~10GΩ