ROCKSTONE POWER Rockstone Power 2000 Watt Heavy Duty Step Up/Down Voltage Transformer Converter - Step Up/Down 110/120/220/240 Volt - 5V USB Port - CE Certified

Lo adquirí bajo la asunción que sería útil para colocarlo entre una toma de corriente residencial en Cd. México (110-120V) y activar una caminadora de uso rudo (220V). Desafortunadamente no logré el objetivo, quedándome con el convertidor de corriente sin uso... Será posible cambiarlo por otro producto?. Gracias.

I bought 5000 a yr earlier then bought 2000 watts they were great. I didn't have any issue with this product. it run quite and heavy. I am planning buy more of them soon. Inspect your product before plug in. read manual carefully.

I bought this step-up transformer just about a year ago to power a variety of household electronics that I brought from Europe, including a fan. All of these devices require a 220V input, and initially, the transformer worked as expected, stepping up the voltage quietly and reliably. However, five days short of its one-year anniversary, the transformer started to make an uncomfortably loud humming noise. This is not just a minor inconvenience, as the noise is so intrusive that it overpowers even the sound of the fan in operation. This issue has become a significant concern for me as I use the transformer not just for the fan, but for multiple appliances. Each time I need to use any of these appliances, I'm faced with a dilemma: tolerate the excessive noise or do without my much-needed devices. The noise from the transformer has unfortunately transformed (no pun intended) my quiet home into a space filled with an overwhelming, continuous hum. It is quite disappointing, given that the transformer was initially a perfect solution for my European devices. In conclusion, while the transformer remains functional in terms of voltage conversion, the noise issue significantly detracts from its usability. I would urge potential buyers to consider this factor before making a purchase. If you're looking for a quiet solution for powering European appliances, this might not be the product for you.

This transformer has been a life saver! It has effectively served its purpose for the last 3 years. I haven't even had to change the fuse yet. I use it for my Keurig coffee maker everyday and on occasion my Kitchenaid hand-mixer. Because I only have 1 outlet on that side of the kitchen, I have also used a coffee grinder with an EU plug with no issues. I think these devices definitely are worth the cost and hold their value. It is quite heavy and takes up a lot of space in your luggage, but it's worth every penny. Make sure that the model you purchase is specific to the country/region you are going to. The one I purchased has an adapter to plug from EU to US. I'm referring to the power supply cord in this instance.

Works good in Semi trucks