Review on Ivation Generator Purifier Deodorizes Sanitizes by Dominic Maxwell

I am sure the ozone button on this machine does NOTHING. I've had ozone generators for a few decades now. The sound changes to ALL as you turn this knob up or down. Not on this. This one seems to be wide open all the time. I'll keep it because it still works in my situation, but just FYI. Also note this sign. Have you seen this sign anywhere on the internet? I also. I'm not sure if you can find a replacement anywhere.