Category:Warning sirens
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Deutsch: Eine Sirene ist eine Einrichtung zur akustischen Alarmierung oder Warnung, in der Regel durch einen charakteristischen an- und abschwellenden Heulton.
English: A civil defense siren (also referred to as an air raid siren, tornado siren, or outdoor warning siren) is a mechanical device (modern day sirens are electrically-powered) for generating sound to provide warning of approaching danger and sometimes to indicate when the danger has passed.
Subcategories
This category has the following 6 subcategories, out of 6 total.
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Media in category "Warning sirens"
The following 89 files are in this category, out of 89 total.