Federal Signal STH-10

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File: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]

References

  1. ↑ "2-5-SD10-STH10-STL10-255A154F.pdf" (PDF). Civil Defense Museum. Retrieved October 1, 2024.
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