Step Up Buck Transformer 300W Heavy Duty Voltage Converter 110V/220V Output 110V - 120V/220V - 240V Adjustable Input 1. Portable and Practical: Easy to carry, perfect for size and saves space. Multiple devices can be used at the same time if the power supply allows it2. Multi-function voltage converter: This voltage converter is used to change the voltage, from 110 volts to 220 volts, and also can convert the voltage from 220 volts to 110 volts3. Protection function: over current protection, overload protection, over temperature protection, short circuit protection, built-in ground protection4. High efficiency and reliability: the use of copper with electrical conductivity higher than the remaining 50% of the transformer utilization, the utilization rate is 80% 90%5. Widely Used: Wide range of applications and suitable for scientific laboratories, industrial and home electrical equipment such as hair dryer, juicer, rice cooker, air purifier, toilet lid, electric kettle and so on Specification: Item Type: Step Up Buck Transformer Material: Iron , ABS, copper Rated power: 300W Frequency: 50HZ/60HZ Current: 9A Working temperature: -5-40 Input voltage: AC110-120V/AC220-240V (adjustable input voltage) Output voltage: AC110V/AC220V Output socket type: one universal 110 socket V -120V, one universal socket 220V-240V Applications: widely used and suitable for scientific laboratories, industrial and home electrical equipment such as hair dryer, juicer, rice cooker, air purifier, toilet lid, electric kettle and so on How to use: Follow the instructions instructions after taking out the product. Package List: 1 x Step Up Buck Transformer 1 x User Manual Note: Pay attention to the safety of electricity.