The AMADA MM-123B Weld Checker is a compact, multi-functional device for welding quality management. It measures current, voltage, and time, supporting various power supplies. Key features include simultaneous current/voltage measurement for heat calculation, improved ISO17657-compliant accuracy, and low current measurement from 0.01kA. It supports long-time measurements (up to 3000ms) and offers upper/lower limit judgment. Ethernet communication enables uniform, two-way data management. This versatile tool is crucial for maintaining high standards in resistance welding.