SEYAS 500W Auto Step Up & Step Down Voltage Transformer Converter, 110-120 to 220-240 Volts, Soft Start & Full Load, 7x24hrs Continous Run, Circuit Breaker Protection, U.S. Patent No. US9225259 B2

I ordered this to power my 220 volt German mini-component hi-fi, which requires a constant 220 watts (minimum) or so, and is powered by two outlets. I was interested in the Seyas 500W because it has two international outlets, obviating the need for a power strip, at least for the foreseeable future. The 500 watt rating seemed safe for my application, and given the good reviews (and yes, I thought it was interesting that this item bore a patent) I decided to order it. Well, what do I think? First, the item has updated branding that isn't depicted here. It's similar, but the logo has been refreshed, and it all looks nicer. This is really to say that I was surprised a bit by the presentation of the packaging... which is to say that it's professional and thus completely ordinary. So far, so good! The item itself appears to be well constructed, with metal appearing to be used for all of its faces. The feel and action of all moving parts is good. The power cable is thick and sturdy to the eye. Everything about the item's physical appearance suggests a level of quality one is likely to expect, which is good to the point of being invisible, and that is how it should be I think. The international sockets do fit my German plugs loosely, as others have commented. They stay in fine on their own, but they are loose to the point of what I would consider "breakaway," i.e. they are designed to release the plug freely from the socket in the event of a snag. If you have a cat, and your cat thinks this new object is interesting, your cat brushing against the inserted plugs is enough to loosen them to the point of interrupting the power; very touchy! With my converter placed under my desk, back near the wall, I found that bumping it with a stray outstretched foot is also enough to potentially loosen a plug to the point of power interruption... not conducive to jamming to the tunes, or transferring electricity for that matter! My solution for this is to turn the converter so it is facing away from me. It makes the sockets hard to access (should I need to access them,) but that is the only resolution that I feel doesn't compromise the safe operation of the product. Are all outlets of this nature this loose with German-type plugs? I dunno. Because I don't know, I will give Seyas the benefit of the doubt until I discover otherwise. A lot of people have commented on how coolly the item runs. The item can warm very slightly with prolonged use, which seems normal. While a lot of electronics are designed to run hotter than many people are comfortable with, this is not one of them. You may not even know that it was on at all if you only relied on your perception of temperature to tell you if it were. As far as the actual power, well... a few weeks in and it all seems healthy. My devices are happy, they work!! Mission complete! And, I *would* purchase an additional converter by the same company if the need arose.

This worked well for the last 2 years, powering a Swiss coffee machine that nominally outputs 1450Watts (but more like 4.5Amps peak =~900Watts in practice). The device has a nice heavy toroidal transformer inside and not much else. There is a breaker (not a fuse!) rated at 15A, which should sustain 2000W output for 90 minutes (15A*120=1800) as per the spec.

Very good for the current conversion I use it often and it has not failed me I congratulate you for such a good product

Upon plugging in and turning on, I see the protection light comes on and a series of relays clicking on and off. I am guessing it's shifting power where it needs to be based on the input voltages being supplied. It sounds pretty intelligent like it knows what's going on. After second or two everything calms down and the green power light remains lit. I am using this to power my Xiaomi Laser Projector. Decided to give this unit a burn in yesterday, had the unit hooked up to my projector and I had my projector running for about two hours. Upon touching the unit I was expecting to feel some type of residual heat but to my surprise the unit was incredibly cool! I've read some reviews about the outlets getting loose over time, I can honestly say that my outlet seems to exhibit that issue. It's not loose in the sense that the outlet itself is going to fall out, it's loose in the sense that the outlet itself doesn't seem to grip the projector plug I have inserted into the unit snugly. I am curious if this is a design issue since it's a universal type of outlet that has to maintain compatibility with multiple types of international plugs. If I were to experience any type of issue with plugs falling out, I might improvise a solution to keep this from happening, so far my projector stayed plugged in just fine, I didn't experience any issue when tugging lightly on the plug but if I were to compare it to my normal household outlet, I would say the holding force of this unit would range at about 15-20% compared to the force to pull a plug out of my outlet at home. Again though, as it stands so far, I am quite pleased with the unit and my projector seems to be as well! I am looking forward to movie nights!

I needed a power supply for a top end European stirring hot plate. This transformer does the job perfectly. It is really heavy, I think about 11 pounds, but it has enough wattage to safely power my 1000 watt hot plate without a hitch. And at a very economical price point. I have had the unit for two years and used it a total of perhaps 25 hours only. But it shows every sign of being a durable appliance. Highly recommended.

We’ve been using it for a vacuum cleaner brought over from the UK without any problems— it’s silent, sturdy looking and doesn’t overheat, so I was really chuffed with the purchase. I was expecting it to work indefinitely (or at least for 5-10 years) given the investment, so I was really disappointed that it’s now broken after only 2 years and 1 month of light use. We don’t know what happened, it simply went up in flames after a couple minutes of hovering— we realized that something was wrong due the sudden smoke and then we were shocked to see it was burning. It kept releasing smoke for a while and it still smells terrible. My husband said that he noticed that the hoover was much weaker than usual but didn’t give it much thought initially thinking that maybe the bag needed changing. We now think that the converter’s auto function didn’t work correctly so it didn’t automatically switch to the right voltage. Very disappointed that it stopped working so suddenly in what could have been a dangerous incident. We hope that our $350+ hoover is still OK, but we won’t know until we get a new converter.

El producto nunca funciono. Simplemente no encendía.

Did the work, Nebulizer from India was not working before until I got this. Satisfied with the purchase.

Bought it to power a European 220v lamp in Canada. It is on the bigger side and has some heft (about three quarters of the size of a shoe box), so not ideal for travel, but I assume it is the size and weight it is because it has quality parts. However, if you are just going to keep it at home it is great. You plug it in, turn it on, and it just detects what is plugged in and converts the power (has various sockets). That simple. It doesn't make any noise, just works.

This is a second unit I ordered, the first one is still running after two years of operation. Sometimes we have to order newer/unique appliances from Asia where North America just simply do not have, so 220V is a requirement on running those fancy units in Canada. The build is solid, you simply plug the unit to the 110v wall and plug in your 220V appliances to this unit, it will do the rest work for you. Make sure you have the correct wattage rating for your appliances so you are not overloading the converter. The price is darn cheap for the quality you are getting, you gotta give China credits for producing these solid products at such competitive pricing. For the same unit if they are build here, be ready to pay an arm or leg for this type of qualities.

I does wonders. Good product especially if you have to convert power.