Federal Signal STH-10
Appearance
![](http://upload.wikimedia.org/wikipedia/en/thumb/a/aa/STH-10_Official.jpg/220px-STH-10_Official.jpg)
The Federal Signal STH-10 is a discontinued omnidirectional siren produced by Federal Signal over a span of 50 years.[1]
It is a 12 Port Omnidirectional 10Horsepower siren, most examples are still around today.
References
[edit]- ^ "2-5-SD10-STH10-STL10-255A154F.pdf" (PDF). Civil Defense Museum. Retrieved October 1, 2024.