Goldsource 500W Step Up & Step Down Voltage Transformer Converter, STU-500 Heavy Duty Continuous AC 110-120V to 220-240V Converter with US Standard & Universal Outlets and DC 5V USB Port, 500 Watt

hi let's talk to you about this step up and step down voltage transformer basically what it does is it converts voltage from 110 to 220 or from 220 to 110 so first of all step up imagine that you're in the US or Canada somewhere like that and you want to power something from the UK or Europe you would need to step the voltage there which is 110 120 up to 220 so that you could power the European equipment if you're in Europe or UK and you want to power something from the US say when you would step our voltage at 220 volts voltage down to 110 there are two sockets on the front here as a universal socket which will always output 220 and there's a us-style socket which will output 110 if you're stay in the UK and you are using it to power something from the US you can plug something from the UK into this socket if you want to because it's still outputting 220 on the back of the converter th