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A small industrial siren. These used smaller horns than the others. They had one 100 watt driver per horn (AL-1000) or two 100 watt drivers per horn (AL-2000). Horns could be removed for uni-directional applications. AL-4000/AL-6000/AL-8000 Electronic none none 1984-1995 Omni/uni Directional dB rating depends on model.
An 1860s-era siren. [ 2 ] A siren is a loud noise-making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines. There are two general types: mechanical and electronic.
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 ⓘ. A civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger.
Federal Signal Modulator. A Federal Signal Modulator siren in Bay Head, New Jersey. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster.
Q2B. This Q2B or "Q-siren" is mounted on a Pierce Platform Aerial Fire Truck owned by the City of Bellingham, WA. The Q2B siren (" Q-siren ") [1] is an electromechanical siren that is produced by the Federal Signal Corporation and is most recognizable for its sound, which is trademarked, and the look of the siren.
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The Banshee, Screamer, Cyclone, Howler, and Allertor are a few of the names under which these sirens were known. In the early 1980s, the Allertor and Hurricane sirens were discontinued, succeeded by a new lineup, known as the Penetrator series. This series consisted of three models, each denoting the horsepower of their motor: P-10, P-15, and P-50.
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