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  2. ATI HPSS - Wikipedia

    en.wikipedia.org/wiki/ATI_HPSS

    San Francisco, California - This system is unique featuring the sound of the decommissioned Federal Signal STL-10 sirens that the HPSS units replaced; Casitas Dam, Ventura, California - This system is unique as they look like the Federal Signal Directional Speaker Array (DSA) sirens, but can have 7–8 speakers per stack, and gray caps on the speaker cones.

  3. Panic button - Wikipedia

    en.wikipedia.org/wiki/Panic_button

    A personal safety alarm starts sounding once the emergency button is pressed. A personal alarm is a small hand-held electronic device with the functionality to emit a loud siren-like alarming sound. It is activated either by a button, or a cord that, when pulled, sets the siren off.

  4. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A wireless system can be moved to a new property easily. An important wireless connection for security is between the control panel and the monitoring station. Wireless monitoring of the alarm system protects against a burglar cutting cables or from failures of an internet provider. This setup is commonly referred to as fully wireless.

  5. Warning system - Wikipedia

    en.wikipedia.org/wiki/Warning_system

    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

  6. Emergency population warning - Wikipedia

    en.wikipedia.org/wiki/Emergency_population_warning

    Systems targeted for inclusion in IPAWS include the Emergency Alert System, the Commercial Mobile Alert System using cellular telephones and other wireless devices and the NOAA Weather Radio network. Electronic Whelen WPS-2750 Warning Siren in Milpitas, CA. Many states use existing air raid sirens to warn of tornadoes

  7. List of sirens built by Alerting Communicators of America

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

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95