1. DC arc, DC stick, MMA welding. 2. Simple TIG 3. Memory parameter 4. input voltage +15%~-20% 5. CCC,CE FEATURES:1 ... start and arc force function, insure enough melting deepness, prevent welding rod from cling to base metal, control splash effectively.4. Have ... range is in +15%--20% can normal work.5. Suitable for all kinds of alkaline, acidic welding rods in welding carbon steel, stainless ...