I don’t think anyone is trying to prove you wrong. Just trying to answer your questions and clarify it does have a battery. This forum is meant for current users to provide constructive feedback, not bash the system and Wyze like some have tried. I could list a whole number of things I “wish” it could do, but at the end of the day, it works well for the price I paid. If they add more sensors like water and fire, I’d buy them. If not, I’ll be fine without them. My point is if the system doesn’t suit your needs, there are plenty of other options available.