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Question: I have a 220 v applicance will it transform when in US?
Document: I don't keep it behind the rack to allow it enough space to breath. I have not tried it as a step-up transformer (to boost 110 v to 220 v for equipment purchased in Europe and running in the U.S.) but I don't expect there would be any problems. Two thumbs up all the way!
I run a 220 Volts lamp on it (12 V halogene). At first the unit couldn't figure out the automatic conversion (in this case 110 to 220 and was toggling back and forth when I moved it. Now it's stable and works well. Doesn't heat up but then again it' a low charge for a 500 Watts unit. I was disappointed that it didn't come with a US adaptor as this unit as the German plug has standard.
I bought this item for some friends visiting from Europe who had brought a number of devices with them from Europe. Most of the converters/adapters are one way hence if you try to find an adapter in the US most will be for 110 to 220. also most have very low power amp ratings. Worse then useless for a Euopean who needs one after they get here. This device works in both directions! It automatically adjusts the out put voltage/current based on what you plug it into.
This transformer is a brick, it's heavy and well made. Unlike all other 110-220 transformers I've ever owned, as soon as I used this one it was apparent it's a quality transformer and not cheap junk. What most may not realize is that as it's a 500 watt unit, you can use a gang plug and power several devices in your hotel room at once - laptop, phone charger, hair dryer, etc.
I have been using it as a step-down transformer for the past 3 months in Asia, and it works as promised. No fuss, no hangups. It is powering a Marantz Network Audio player by stepping down 220 volts, the standard voltage in Asia, to 110 volts for which the Marantz is designed. The equipment has a power rating of 23 watts, and the transformer has no trouble with it. It gets slightly hot, which is expected of any transformer. Don't be fooled by its small size.
Product works very well and helped us stepup from 110 to 220 no problem. Using a 75W Hair Flat Iron and it does the job very well of converting to 220V
Great product! Light: 1.9 kg and very small (compared to the competition), and you don't have to worry about nothing: if detects the voltage of the outlet your are plugin it to and automatically converts to the opposite voltage, like 220 --> 110 or 110 --> 220.
I use this trans in US in my dinning room. It goes off after hour or two until it cools off.
I use it for PS3 which was been bought from US (110v).Only thing that I changed is that the plug...  As it came for US standards...Other than that works fine so far... No noise or anything....Super
It's small size helps to hide it away behind furniture, but if you can't hide it, its not obtrusive. Its power cable came with a moulded euro 2-pin plug fitted, which I replaced with a standard US plug.
Answer: Yes