Function:Washer welding,carbon rod heating,partial heating and tempering for car body. Microprocessor controlled,the mult-fnction control panel set the spot welding parameters automatically.And also allow to adjust the parameters by manual. When work on car top and narow interior space,the main unit is separable from the trolley. For operation convenient,with automatic detection welding. 3 flexible earth connection Inner fan for heat dissipation Copper transformer Thermal protection Compact portable