Suitable for measuring the insulation resistance of electric motor, cable, switch, electrical appliance and other electrical equipment and insulation materials. 1. Model No.: ETCR3460B 2.Rated Voltage: 50V~ 5000V 3. Insulation Resistance Range: 0.1MΩ~400GΩ 4. Voltage Range: AC/DC 0~750V 5. Output Short Circuit Current: ≥2mA MAX 6. Power Supply: DC 1.5V LR14*6PCS