The Siren Board

I have recently found some neat sirens in Tennessee, mainly between Nashville and Knoxville (this area tends to be left out compared to others). Here they are:
1. Federal Signal SD-10: Clarkrange Volunteer Fire, Clarkrange, TN.
2. Federal Signal Model 3: Allardt Fire Department, Allardt, TN
3. Darley Model X?: 385 Helenwood, TN.
4. Darley Model 5: Estill Springs Fire Department, Estill Springs, TN.

I'm still not 100% confident about the supposed "Darley" in Helenwood. I'm just guessing based on satellite, since there is no street view.

I've known about the Darley in Estill Springs for a few years now personally, though I don't know if I've posted it anywhere before (if I did, it was most likely on Facebook though). Would love to know when it's tested.

There is a (Now Inactive) Mobil Directo in Pinson, About 10 Miles South of Jackson, about a Quarter Mile away from a 2001.