Image: Civil Defense Siren

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Description: 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
Title: Civil Defense Siren
Credit: Transferred from en.wikipedia to Commons.
Author: The original uploader was Sulfur at English Wikipedia. Later versions were uploaded by Giltramirez, Thunderbolttactical at en.wikipedia.
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes

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Parks of Milwaukee

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