Thu Dec 22, 2022 1:59 am
The Model 3, 5 and 7 date back pretty far. I'm not certain on a more precise date, but they definitely reach back to the 1940s, heck maybe even further into the late 30s. The Model 2 is even older.
My knowledge excels on the Federal Thunderbolt siren and SiraTone EOWS sirens. ¯\_(ツ)_/¯
Proud owner of
2014 Federal UltraVoice UVICU
1981 SiraTone C/B prototype
1984 SiraTone C/B