HIM250DPP is a great machine for professional welders! 4 in1 synergic sontrol welder equipped with a digital LCD display and clearly guides every step of the welding process, making welding easy and efficient. You only need to set the welding mode, material, wires/electrodes/tungsten size, and plate thickness. Recommend suitable current adjustment. | voltage | current | Welding mode | Wire diameter | Metal type and thickness | 2T/4T spot welding mode.Noise free Rescue your ears from the noisy Product Details