?Warning?The 500W transformer cannot support high-wattage appliances (e.g., coffee makers, hair dryers, rice cookers, microwaves, AC units, or curling irons). For these devices, use our 3000W transformer. ?Voltage transformer (110V to 220V,220V to 110V)?We provide you a safe, dependable, stable, cost-effective easy solution to converting voltages from 110 volts up to 220 volts or from 220 volts down to 110 volts.[!Please switch to the correct input voltage before you plug in(110V in US/CA/MX,220V in UK/EU/Australia/Hong Kong etc.)] ?Rated Power: 300W Continuous / 500W Peak (Max)?The Voltage Converter Transformer can be used with any kind of appliance or device up to 300 watts, like CPAP Machine, Electrical toothbrush,Laptop, Mobile phones, audio amps, Television, Xbox, etc.Exceeding 300W continuous / 500W Peak usage may trigger overload protection. ?AC outputs? 1 US Standard Socket for 110-120V appliance(s) 1 Universal Sockets accept all types of plugs except the Big South African plug for 220-240V appliance(s).?NOTE?The transformer is equipped with an US power cord, if used in other 220V-240V country you MUST need a plug adapter or local power cord. ?Note?The transformer only converts the voltage, not the frequency hz. If your appliance is not compatible with 50/60hz, it will have an effect on the usage effect. Hair dryers and coffee makers are recommended to choose a transformer with more than 2 times power. ?Product Size? 6.9*4.3*3.2 in/17.5*11*8.2 cm, Weight:4.8 lb/2.2kg.If you are traveling to carry it, please consider it carefully. ?Safe?Circuit breaker protective is safe operation.[12-month limited warranty]If you have any question,please feel free to contact us.