
Refine on 200A Manufacturer Fully Automatic Loop Resistance Tester Digital Contact Resistance Tester Circuit Breaker Tester. Large-Range Current Output: Customizable current from 20A to 600A with long-time continuous output capability. Smart Color Touch Screen: 800*480 high resolution 7-inch color touch screen with user interactive interface. Multi-Phase Testing: Supports single-phase, two-phase, and three-phase tests with automatic average calculation. Data Storage & Export: Built-in large capacity storage and removable USB flash drive for Excel file records. Bluetooth Control: Standard Bluetooth function with Android APP for data control and upload. RS232/RS485 Communication: Build-in RS232 port with customized conversion to RS485 for Modbus-RTU protocol. One-Year Warranty: Comprehensive one-year warranty with provided after-sales service support.