... our machine can control welding torch move along welding seam direction strictly, thus saving cost, improving welding efficiency, ... DC Motor Driving Method Motor Drive→Reducer→Ball Screw→Seam TrackerInput PowerAC100~240V Single-Phase,50/60HZ,2AStandard ... , Remote Control BoxRemark: We can also make seam tracker in special specification for user demands. portable Weld Seam Tracker YXAWST-100C