Wide ApplicationCan adjust speed, temperature, light. It is suitable for drills, electric fans, exhaust fans, angle grinders, blowers, electric drills, LED lights and etc. But not suitable for appliances with circuit boards, such as induction cookers, microwaves, ,LED energy-saving lamps and similar devicesLED Display ScreenHigh-precision LED voltage display screen shows real-time output voltage number when you adjust the knob. The real-time output voltage is within the rated voltage.Black-Coated Metal Shell The shell is made with 0.8mm thick galvanized black-coated metal plate, sturdy, flame retardant and rust-proofTechnical ParametersAC 110-120V; Rated Current 10A; Max Current: 15A; Frequency: 60Hz; Resistive Load: Max 2000W, like electric stove; Inductive Load: Max 1000W, like angle grinderPrecision Voltage ControlAdopt precision potentiometer to regulate voltage to control speed, heating and light easily, accuracy up to 1 volt