On-line testing the equipotential bonding resistance, DC resistance, contact resistance, riveting resistance, etcEquipotential Bonding Reistance On-line Tester apply for on-line testing the equipotential bonding resistance, DC resistance, contact resistance, riveting resistance, etc. 1.Model No.: ETCR3740 2. Measurement Range: 1mΩ~1000Ω 3. Max Test Current: ≥1A 4. Measurment Time: About 30 seconds/times 5. Communication Mode: RS485 6. Power Supply : 12V±1V DC(External power supply)