SEVENSTAR AR 5000W Heavy Duty Voltage Reglator/Stabilizer with Built-in Step Up/Down Voltage Transformer

Bought this product for my electrical lab in my plant as we have some 230 VAC devices which we needed to test. Very sturdy built. Delivered on time and doing great uotill now.

Initially it blew out the circuit when I switched it on with 120v mains. Upon opening the case, I found the wires either not soldered initially, or poorly soldered as to have failed upon switch-on. I carefully resoldered the 120/240 switch, and it now performs as expected.

Para estabilidad de corriente eléctrica en la casa es muy baja la energía eléctrica

This power inverter works great. I bought it to run my portable table saw and I've had no issues going from 220 to 110. I would definitely buy it again. As a saw starts up it does not draw down the wattage of the box as the cheaper models do.

Solo q tienes q tener como mínimo unos 75v para que me funcione la línea 110v

This product seemed to work great at first. It had proper output readings and everything seemed fine. But a month and a half in it died on me. Not completely, it works for a few minutes here or there but is incredible inconsistent.This product may work fine if you are not demanding much from it, but I am in a very rural area with bad power coming in and it just isn't up to the task. Sadly, I am past the return date

Saw it, bought it, purchased it. Was delivered on time and so far it met all my expectations. I do certainly recommend it (y)

The product consists of an undersized toroidal transformer with various taps. A very primitive circuit consisting of a few components switches between the taps of the transformer in rough steps via an open relay when the input voltage fluctuates.The product weighs over 13 kilograms. It was not packed according to the weight! The central fastening screw of the toroidal transformer had loosened alarmingly and the toroidal transformer had thus pushed some indicating instruments out of the housing.