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A civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger. Initially designed to warn city dwellers of air raids ( air-raid sirens ) during World War II , they were later used to warn of nuclear attack and natural disasters , such as tornadoes ( tornado sirens ).
English: Video of Federal Signal Thunderbeam Warning / Civil Defense Siren Test in "Alert" mode for Severe Weather Awareness Week. Recorded in St. Paul, Minnesota, USA. Recorded in St. Paul, Minnesota, USA.
In civil defense sirens, the ATI High-Power Speaker Station (HPSS) [1] is an electronic outdoor warning siren manufactured by Acoustic Technology, Inc (ATI) that is used to alert citizens of air raids, and natural disasters.
Electronic Sirens Pavian by Telegrafia A Whelen WPS electronic siren imported to Saudi Arabia by HSS Engineering for use as a civil defense siren. There are 8,200 alarm sirens for civil protection throughout Switzerland. They are tested once a year, on the first Wednesday in February. [1] Sound sample ⓘ An 1860s-era siren. [2]
Public warning system siren in Dresden, Germany. An emergency population warning, or public warning system is a method where by local, regional, or national authorities can contact or notify members of the public to warn them of an impending emergency. These warnings may be necessary for a number of reasons, including:
This page was last edited on 20 February 2025, at 19:46 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
These tapes contained scripted attack warnings, recorded siren sounds and other emergency information for use in the event of nuclear war. [6] [7] As official information began to emerge from various sources, non-primary stations were to broadcast it according to the following priority list: Messages from the president of the United States
A HSS Engineering TWS 295 electronic sirens warning Civil Defense siren. There are 8,200 alarm sirens for civil protection throughout Switzerland. They are tested once a year, on the first Wednesday in February. [1] Sound sample ⓘ Warning light indicating danger of laser exposure
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