Product features: Adopting a precision pressure regulating knob, one turn pressure regulation,easy speed regulation,high precision,good stability,It can be used by plugging in and compatible with American standard A and B type plugs Safety performance:The shell is made of flame-retardant material,which is high-temperature flame-retardant and does not deform during high temperature burning,It has independent switch control input and output voltage with overload Application:Angle grinder, marble machine, exhaust fan,electric furnace, tungsten filament light bulb,blower can all be used (products with circuit boards and capacitor electronic components inside cannot be used) Clever design:Designed with a tool kit for hanging and fishing, making it easy to operate the angle grinder,Tools such as marble machine and blower.Parameter Description:voltage 100-120AC adjustable,Supports a maximum resistive load of 4000 watts and an inductive load of 1500 watts Maximum current capacity 15A,rated cur