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  2. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    Three sirens in this line up: T-128, T-135 AC, and T-135 AC/DC The T-135 AC was known as ACA P-50, the name was changed after ACA's bankruptcy. The T-135 AC/DC is a siren that is bigger and more powerful than the T-128 and has a similar design and also has a battery backup system. This was introduced around 2007, replacing the T-135 AC.

  3. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    Federal Signal Safety and Security Systems Group manufactures campus alerting systems, emergency vehicle lighting, emergency sirens, alarm systems, outdoor warning sirens, and public address systems. Currently, the company has 14 manufacturing facilities in 5 different countries. [1]

  4. American Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/American_Signal_Corporation

    Hörmann GmbH began selling their ECN/ECI sirens through ASC's market. Over the decade, the prominent advancements the company made in its sirens' designs included battery operation, high powered Voice/Sirens, and indoor alerting systems. Similarly, designed sirens were still manufactured, but under new names, such as the Tempest series.

  5. Car alarm - Wikipedia

    en.wikipedia.org/wiki/Car_alarm

    Frequently, false alarms occur because car alarm owners use high sensitivity settings. This may be the main reason why loud bass frequency sound (loud music, other cars or motorcycles with loud exhaust systems, thunderstorms, etc.) can set off car alarms. The second possible reason is that some parts of the alarm system may be improperly installed.

  6. Warning system - Wikipedia

    en.wikipedia.org/wiki/Warning_system

    A warning system is any system of biological or technical nature deployed by an individual or group to inform of a future danger. Its purpose is to enable the deployer of the warning system to prepare for the danger and act accordingly to mitigate or avoid it.

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

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

    According to Al "Buddy" Kirsits, director of the county's Emergency Management Agency, the sirens are more than just tornado sirens. "They're an early warning outdoor siren system," he said Monday.

  8. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    Severn Estuary has a system of Modulator and DSA sirens. The system runs on both UltraVoice and MCP Controllers. They have very different tones compared to the American ones, potentially custom. The system is activated by radio signal at Avon and Somerset Police headquarters. Clemson University has a system of MOD-5020s, MOD-4016s and 2001s.

  9. SimplexGrinnell - Wikipedia

    en.wikipedia.org/wiki/SimplexGrinnell

    SimplexGrinnell, a subsidiary of Johnson Controls, is an American company specializing in active fire protection systems, communication systems and testing, inspection and maintenance services. The company headquarters is in Boca Raton , Florida ; corporate sales and marketing offices are in Westminster , Massachusetts , and the company has ...