I have no opinion as to the quality of this product. Although I read the description it would not work for what I wanted. I needed a switch for my RV between the shore power and the generator. Beware, this is a 2 input, 2output switch. I needed a 2 input 1 output. If you use this switch it will back feed electricity into whichever device your not using potentially causing generator damage. Also, nothing larger than a 10 AWG wire will go into the terminals so if your using larger wire you must attach wire lugs. Again, nothing wrong with the switch itself.