External warning sirens

I have heard that there are outdoor warning sirens, and I would like to know a little more about that, what can you advise me? Thanks in advance for the information. Just my wife is worried about natural disasters.

Warning sirens are very handy, and help save many lives. I can basically tell you a little bit about it, and I can even recommend a website https://www.atisystems.com/products/outdoor-warning-sirens/ where you can find more information about outdoor warning sirens. It is thanks to this site that I learned all about it, so pay attention.