✅High-efficiency Conversion: The 2400W strong power can quickly and stably convert the voltage between 110V and 220V, which greatly improves the conversion efficiency and realizes efficient and stable operation. ✅Life Assistant: With 4 output sockets, it adapts to various electrical products in different countries, achieving energy-saving, safe, and stable electricity consumption. ✅Safety Guard: It has lightning protection, current protection, built-in fuse, over-temperature protection and overload protection to ensure the safety of use. Multiple cooling holes can ensure the stability of the product when running. Details Portable Hand Strap: The portable hand strap on the machine top can be properly pulled up, so you can take it around with less effort. Stable Support Feet: They are abrasion-resistant, non-slip, and will not scratch your desktop, ensuring stable operation.  Application It can be used in most household appliances, such as coffee makers, kettles, rice cookers, juicers, air purifiers, toilet seats, refrigerators, electric toothbrushes, massagers, yogurt makers and so on. To Convert 110V to 220V 1.Make sure the appliance to be plugged in uses fewer watts than the transformer's rating. 2.Insert the voltage tap plug (located on the rear of the transformer) into the pair of holes marked "110". 3.Plug the transformer's power cord into a source of 110 volts. 4.220 volts will be available at the front panel outlet marked "220" volts when the power switch is turned on. To Convert 220V to 110V 1.Make sure the appliance to be plugged in uses fewer watts than the transformer's rating. 2.Insert the voltage tap plug (located on the rear of the transformer) into the pair of holes corresponding to the local voltage standard. Check carefully to be sure no error has been made. 3.Plug the transformer power cord into a 200, 220, or 240 volt power source. 4.When the power switch is turned on, the receptacle labeled “110” volts on the front panel will provide 110 volts. Specifications Color: Black Material: Iron, Copper, Aluminum and Silicon Steel Sheets Shape: Rectangular Model: STU-3000 Mounting Type: Floor Standing Plug Type: EU Standard Power Source: Corded Electric Voltage Conversion: Step-Up & Down Output Voltage: 110V, 220V Input Voltage: 110V, 200V, 220V, 240V Number of Sockets: 4(2 Universal Sockets, 2 US Standard Sockets) Rated Capacity 3000VA Power: 2400W Product Size: 23*19.3*15.3cm/9.06*7.6*6.02inch Package Size: 29*25*19cm/11.42*9.84*7.48in Gross Weight: 8.15kg/17.97lbs Net Weight: 7.74kg/17.06lbs Package Included 1* Voltage Converter 1* Power Cord 1* English Manual Notes 1.Please insert the voltage tap plug (on the back of the transformer) into the pair of holes corresponding to the local voltage standard and check carefully for errors. 2.The power of this product must be greater than 2.5 times the power of the connected device before it can be used normally. 3.To prevent damage and possible fire hazards, replace the fuse with a slow blow fuse (MDL, not included) of the same amperage as the original fuse. If the fuse continues to blow, the transformer and/or equipment connected to it may burn out and require repair. 4.Please read the English manual and the label on the body of the product carefully before use and pay particular attention to the safety instructions contained therein.