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2. Thunderbolt (siren) - Wikipedia

   en.wikipedia.org/wiki/Thunderbolt_(siren)

   The Thunderbolt siren was developed between 1952 and 1990. It was the first "supercharged" siren, which uses a blower to force air into the rotor, greatly increasing the siren's volume. In the 1980s, when civil defense fell into disuse, thunderbolts across the United States were repurposed for nuclear and storm warning siren systems.

3. Federal Signal Modulator - Wikipedia

   en.wikipedia.org/wiki/Federal_Signal_Modulator

   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.

4. Ring (company) - Wikipedia

   en.wikipedia.org/wiki/Ring_(company)

   Ring LLC. Ring LLC is a manufacturer of home security and smart home devices owned by Amazon. It manufactures a titular line of smart doorbells, home security cameras, and alarm systems. It also operates Neighbors, a social network that allows users to discuss local safety and security issues, and share footage captured with Ring products.

5. Hear an outdoor emergency siren in the county? Here's ... - AOL

   www.aol.com/hear-outdoor-emergency-siren-county...

   One of 67 of the St. Joseph County outdoor warning sirens are in place Monday, Feb. 27, 2024, at 1511 Milburn Boulevard at LaSalle Elementary School in Mishawaka.

6. Maui’s warning sirens stayed silent as wildfires approached ...

   www.aol.com/maui-warning-sirens-stayed-silent...

   Meanwhile, here’s what we know about Hawaii’s all-hazard outdoor siren system. Shifting narratives about sirens’ silence. It remains unclear exactly why the system didn’t work as intended.

7. Federal Signal Model 2 - Wikipedia

   en.wikipedia.org/wiki/Federal_Signal_Model_2

   The Model 2 features a 2 HP universal motor powering a single-tone 5-port chopper motor, which was also used on the Thunderbolt 1000, another siren once made by Federal Signal. It can produce 3 signals at 102 dBC: The Model 2 is 25.5 inches tall by 12 inches wide, and weighs 68 lbs. It can be roof-mounted or pole-mounted, at a recommended 35 ...