Convenient Knob: It facilitates you to adjust the voltage infinitely. Rounded Edges: The rounded edges not only ensure safe use but also enhance the aesthetics of the product. Long Power Cord: The 3.28 ft power cord reduces usage restrictions and further protects your safety. Application This product is suitable for household appliances, industrial appliances, scientific test instruments, factories, and electrical equipment used in schools. It can be used with brush motors, sanders, cutters, chainsaws, trimmers, impact drills, polishers, electric pots, electric kettles, electric blankets, fans, and so on. Package Included Material: Galvanized Steel Sheet Process: Plastic Spraying Style: Modern Color: Grey Mount Type: Free Standing, Hanging Mounted Power Source: Corded Electric Plug Type: EU Standard Input Voltage: AC 220V Output Voltage: 0-220V Adjustable Limit Power: 4000W (Adaptable to 2000W-3000W Resistive Load) Voltage Regulation Range: 0-220V Infinitely Adjustable Limit Current: 18A Rated Current: 9A Power Cord Length: 1m/3.28ft Product Size: 10*8.4*5.3cm/3.94*3.3*2.08in Package Size: 14.5*10.7*8.7cm/5.71*4.21*3.43in Gross Weight: 0.4kg/0.88lbs Package Included 1* Electronic Voltage Regulator Notes 1.The load must be switched on before debugging the voltage (test voltage). 2.When the machine is empty, the measured output voltage is a virtual voltage, and a load of more than 20W must be connected to measure the correct output voltage. 3.The input is AC and the output is likewise AC, not DC. 4.The above-mentioned 4000W refers to the limit of power when working in a resistive load. Inductive load is 1/3 of resistive load. Resistive load refers to tungsten lamps, heating wires, etc. Inductive load refers to series excitation motor, etc. Electronic products with circuit boards are used with caution. 5.This product is a metal shell that must be safely grounded. 6.Please note that this product is not applicable to household water pumps, single-phase motors, household microwave ovens, smart rice cookers, or LED energy-saving lamps.