[800 WATT STEP UP/ DOWN VOLTAGE TRANSFORMER] Can be used with any kind of appliance/device up to 500W, including but not limited to CPAP Machine, Coffee Maker, Hair Straightener, Curling Irons, Heating Pad, Television, Xbox, etc. [Multiple Sockets] 3 AC outputs, 1 US Standard Socket for 110-120V appliance & 1 EU Socket and 1 UK Socket for 220-240V appliance.The transformer can be used in countries which voltage are 110V～120V or 220V～240V such as US, EUR, UK and more. [Detachable Power Cord] Easy Switching to the correct country cord.Please make sure you have the right plug/socket before buying. [Dual circuit breaker]When products are connected to the converter and when poweris“ ON”, during that time if circuit breaker opens the circuit that means the converter is over loade with too many appliances. Connecting too many appliances to the transformer draws too much power that cause the circuit breaker to open the circuit. What is included in the box:One 800w voltage converter,One American power cord,One European power cord,One UK power cord. Specification: Model:VTUSUKEU-800VA Power : 800w Frequency: 50HZ/60HZ Input voltage: 110V / 220V Output voltage: 110V±8% , 220 V ±8% [Fuse] When products are connected to the converter and when poweris“ ON”, during that time if circuit breaker opens the circuit that means the converter is over loade with too many appliances. Connecting too many appliances to the transformer draws too much power that cause the circuit breaker to open the circuit. If that happens, switch canverter“OFF”. , unplug from the wall outlet then decrease th loading by unplugging the appliances from the converter. Unplug the converter from the wall. Press button on circuit breaker. Wait few minutes then switch power “ON” position. Then switch“ ON”appliances one by one ensuring that their combined rated pawer does not exceed the rating power of the converter.