Don’t use this!
I tried to do the same thing... the problem is, it’s made for non-American 220vac. Or, to better phrase it, it is used for 220vac that you don’t have in your home. It is made for one hot leg, one neutral, and one ground. It’s a scr, so basically a potentiometer and a rectifier bridge.
Your home has two different legs of 120vac, so your power supply for 220vac is between two hots of 120vac. You would actually need two of these, one for each leg of 120vac. Trying to use this one will not change anything, you’ll only waste time and money.