Many speed control circuits rely on the slope of a true, or pure sine wave to trigger the speed. All of the Inverters that are manufactured by Vector are Modified Sine Wave and do not have this slope so if your tool has variable speed it might be erratic. For assistance with any of our Vector Automotive Products please contact Baccus Global LLC through one of the following:
Fax: (561) 361-4228
Mail: Baccus Global LLC 595 S Federal Hwy Ste 210 Boca Raton, FL 33432.