Category:Rotating Sirens: Difference between revisions

Latest revision as of 04:10, 10 March 2017

Sirens that have a narrow, unidirectional sound beam but rotate to cover more area.

The following 25 pages are in this category, out of 25 total.

Revision as of 02:03, 13 December 2013 (view source) MiltonWATech99 (talk \| contribs) No edit summary ← Older edit		Latest revision as of 04:10, 10 March 2017 (view source) Valtonus (talk \| contribs) (Adding to sirens page)
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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.~~		Sirens that have a narrow, unidirectional sound beam but rotate to cover more area.

			[[Category:Sirens]]