Now THAT's what I am talking about! THANK YOU CLETIS!
I will get the parts on order. I was testing piezo buzzers by getting the frequency, then going to a hearing test site, insert the frequency you want to hear and finding the most useful sound. My hearing is awful! Anything above 7000hz is lost on me. My wife can go clear to 12k. The 3900hz standard buzzer is really too high pitched. So, need to research that a bit before putting it all together. The solution will probably be a high-low one.
