The Siren Board

Sorry that I talked when the siren wound up, I could not help myself. I will try not to talk from now on. Also, I recorded this from the back of my car, that's why there are stripes.

https://youtu.be/Hlo24H3Ycxg

What's the 508 used for vs. the 4004?

I think it could be the tornado siren or some emergency siren and the Whelen is just a nooner but I could be wrong