Insulation Resistance On-line Monitor apply for online monitoring the insulation resistance value of various electrical equipment and insulation materials such as cables, motors, switches, electrical appliances, etc.. 1. Model No.: ETCR3580 2. Rated Voltage: 500V 3. Insulation Resistance Range: 0.1MΩ~10GΩ 4. Communication Mode: Manual operation or RS485 remote 5. Circuit Loop Quantity:1~8 Channel 6. Power Supply: DC 12V (External power supply)