I found an article this morning detailing the 2009 installation of Saginaw, Michigan's well-known current siren system consisting of 2001-130s. The article, however, specified that the new sirens would not be capable of transmitting voice messages. Curious, I hopped on Google Earth and used historical view to look at the current locations for old systems remains. As it turns out, the old siren system consisted of Whelen WS-3000s that were pretty low mounted and installed in the '80s, meaning they most likely used the 'Puyallup and Fort Wayne' Pre-ESC864 controllers, and were replaced in 2009 with the current system. There were a few older sirens as well, such as Model 5s, and a Thunderbolt 1003 that was replaced with a FedSig 508 in 2013.
Now i'm on the hunt for more information. The article specified that the installers upgraded technology on several locations, however the only known sirens are 2001-130s and 508s. There may be some Whelen WS-3000s hiding somewhere with UltraVoice controllers. Stay tuned
Article cited: https://www.mlive.com/news/saginaw/2009 ... in_pl.html