Civil Defense Siren

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The original uploader was Sulfur på engelska Wikipedia.

Later versions were uploaded by Giltramirez, Thunderbolttactical at en.wikipedia.

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https://sewiki.info/b/55246

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Beskrivning:

Copyright © 2009 Fedsigtbolt

An example of a civil defense siren (also called a warning siren or tornado siren), found at Baran Park in Milwaukee. This model is a Tempest (T)-135 from Milwaukee based American Signal Corporation (ASC) (formaly known as ACA) which has an acoustical rating of 135 dB @ 100 feet, and has been recently modified with lower horsepower motor & battery backup This siren always comes in the color gray and rarely you see it in the form of yellow. This model of siren has been recently updated with a Shorter projector horn. They now all have battery backup and are known as the ASC T-135 AC/DC. Both versions are the largest and loudest in production today

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CC BY-SA 3.0

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Creative Commons Attribution-Share Alike 3.0