Anbull Voltage Converter 500 Watt Voltage Transformer, 220V / 230V / 240 Volt to 110V / 120 Volt or 110V / 120 Volt to 220V / 230V / 240 Volt, Heavy Duty Step Up Down Transformer Converter ?Maximum 500 Watts: Heavy Duty Step Up/Down Voltage Transformer Converter 500 Watts. Power ON/Off Switch, Can be Used in 110 Volt Countries and 220 Volt Countries, Step Up Voltage from 110V / 120 Volts to 220V / 230V / 240 Volts. Step Down Voltage from 220V / 230V / 240 Volts to 110V / 120 Volts. ?Circuit Breaker Protection: Full Range Fuse Protection, Full Range Over Current Protection. Fuse will cut off the current if the transformer is overloaded to protect the transformer and your appliance. ?High Effective: CE Certified, This voltage transformer has 100% loading capacity. It has 2 AC outlets including a 110V US standard, a 230V Universal. ?Metal Casing Stable Coil: Made of high quality materials, Stable performance, simple operation, reliable circuit. ?Please Note: This 500 watts voltage converter is designed only for European/Asian 220V (Single Phase) , Please do not use it with North American Dual or Tri-phase 220V. ?Safety Reminder: 500W voltage transformer only be used for device without a motor below 330W. If you want to use it on a device with a motor or heating, it is necessary to check your device's peak power (The peak power may be about 2 ~ 5 times the rated power). For safety, the wattage of the voltage converter must be greater than the peak power. If you want to use 2 devices at the same time, the sum of the peak power of the 2 devices cannot be greater than the power of voltage converter.