Feature:1. SUPPORT MULTIPLE DEVICES: Step up buck transformer with a handle at the top of the machine, easy to carry, very suitable for size and save space. You can use multiple devices at the same time, as long as the power supply allow2. COMPREHENSIVE PROTECTION: The converter has overcurrent protection, overload protection, overheat protection, short circuit protection, built in grounding protection and other protection functions3. CONDUCTIVE MATERIAL: This converter is made of copper and has a higher conductivity of 80% to 90% than the other 50% utilization rate, giving you a better choice4. MULTIPLE FUNCTIONS: This voltage converter is used to change the voltage from 110 volts to 220 volts, and can also convert the voltage from 220 volts to 110 volts5. WIDE APPLICATION: Buck boost step up transformer is suitable for a wide range of electrical equipment in scientific laboratories, industry and homes. Such as hair dryer, juicer, rice cooker, air purifier, toilet lid, electric kettle and so onSpecification:Item Type: Step Up Buck TransformerModel: ST-S3000VAMaterial: Iron, ABS, copperRated Power: 3000W(no dummy)Frequency: 50HZ/60HZCurrent: 9AOperating Temperature: -5-40Input Voltage: AC110V AC220V(product input voltage is adjustable)Output Voltage: AC110V or AC220VOutput Socket Type: 1 x 220V universal three hole socket, 2 x 110V three hole socket, 1 x 220V five hole socketApplication: Suitable for various electrical equipment in science laboratory, industries, and homes appliances such as hair dryer, juicer, rice cooker, air purifier, toilet lid, electric kettle and so on.Package List:1 x Voltage Transformer1 x User Manual1 x Plug