Item Type: Power Transformer Model: ST 3000VA Material: Iron, ABS, Copper Rated Power: 3000W Frequency: 50HZ/60HZ Current: 9A Operating Temperature: -5-40 Input Voltage: AC110-120V AC220-240V (adjustable input voltage) Output Voltage: AC110V AC220V Output Socket Type: 2pcs universal sockets, 2pcs US standard sockets, 2pcs 5V USB interfaces Use: 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. 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 80?90%, 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.Please be careful when using electricity.1 x Power Transformer 1 x User Manual