Portable Insulation Resistance Tester applied to measuring the insulation resistance of electric motor, cable, switch, electrical appliance and other electrical equipment and insulation materials. 1. Model No.: ETCR3460A 2.Rated Voltage: 50V~ 2500V 3. Insulation Resistance Range: 0.1MΩ~200GΩ 4. Voltage Range: AC/DC 0~750V 5. Output Short Circuit Current: ≥2mA MAX 6. Power Supply: DC 1.5V LR14*6PCS