Jacob and I were mapping out some sirens in Arkansas, when I plopped down into Streetview in the town of Batesville, in Independence County. What greeted me was a Hörmann-esque electronic siren on a steel pole. I did some digging, knowing I had seen something similar at one point, and discovered that they are the Kockum Sonics TYFONIC Delta 4. And it wasn't a one-off, the county is full of them- from the city of Batesville to the small town of Cord. Jacob searched around and found a few articles claiming that the sirens have been temperamental, and Michael found one from 2014 that stated they haven't worked in years. Another from 2011 states that the sirens were disconnected.
According an article from 2006, the county has 24 of them, and sometimes they simply don't work during testing. They also mention that they have no one to contact, which makes sense given that they are foreign sirens.
I am unsure of the current state of the system, except that they are still standing as of March 2016. It also appears that at least one was replaced with a smaller Sentry siren.
Christian Bricking, living in the Cincinnati Metropolitan Area.
Owner of a WPS-2804, Model L, and B9.
Certified Skywarn spotter since April 5, 2016.