Category:Rotating Sirens

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Sirens that have a narrow sound beam but rotate to cover more area. Rotating Sirens, known as Unidirectional Sirens, have three main rotator speeds, measured in Rotations per Minute, the speeds are 2 RPM, 4 RPM, and 8 RPM.

Pages in category "Rotating Sirens"

The following 39 pages are in this category, out of 39 total.

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