Feature:1. [VOLTAGE CONVERTER] The power transformer can convert the voltage from 110V to 220V, and can also convert the voltage from 220V to 110V.2. [CIRCUIT PROTECTION] With overcurrent, overload, overheating, short circuit and built in grounding protection to ensure safe and reliable operation.3. [EXCELLENT COPPER] The voltage converter is made of excellent copper with high conductivity and utilization rate of 8090%, efficient and durable.4. [MULTIPLE SOCKETS] The transformer is equipped with 2 universal sockets, 2pcs US sockets and 2pcs 5V USB interfaces to meet more needs.5. [PORTABLE DESIGN] With handle on the top, which is easy to carry. If the power supply allows, multiple electrical devices can be used at the same time.Specification:Item Type: Power TransformerModel: ST 3000VAMaterial: Iron, ABS, CopperRated Power: 3000WFrequency: 50HZ/60HZCurrent: 9AOperating Temperature: -5-40Input Voltage: AC110-120V AC220-240V (adjustable input voltage)Output Voltage: AC110V AC220VOutput Socket Type: 2pcs universal sockets, 2pcs US standard sockets, 2pcs 5V USB interfacesUse: Widely used and applicable to various electrical equipment in scientific laboratories, industries and homes, such as hair dryers, juicers, rice cookers, air purifiers, toilet covers, electric kettles, etc..Package List:1 x Power Transformer1 x User ManualNote:Please be careful when using electricity.