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  2. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    In a pneumatic siren, the stator is the part which cuts off and reopens air as rotating blades of a chopper move past the port holes of the stator, generating sound. The pitch of the siren's sound is a function of the speed of the rotor and the number of holes in the stator. A siren with only one row of ports is called a single tone siren.

  3. Standard Emergency Warning Signal - Wikipedia

    en.wikipedia.org/wiki/Standard_Emergency_Warning...

    The Standard Emergency Warning Signal (SEWS) is a warning siren used in Australia to alert the public of danger. The siren is played over radio, television or public address systems in public places to warn of bushfire, flood, cyclone, tsunami, earthquake or terrorist attack.

  4. UK Emergency Alert System - Wikipedia

    en.wikipedia.org/wiki/UK_Emergency_Alert_System

    The alert system is intended to allow government and the emergency services to send a text alert to mobile phones in a situation where there is perceived to be an immediate risk to life. Mobile users will receive an alert accompanied by a siren-like noise, they must acknowledge in order to use the phone's other features.

  5. Download and install the AOL app on iOS

    help.aol.com/articles/aol-app-downloading-and...

    Learn more about the AOL app and download it from the App Store. The AOL app is available for iOS devices running iOS 12 or newer. 1. Open the App Store on your device. 2. Tap the Search icon. 3. Type "AOL" in the search field. 4. Tap Search. 5. Next to AOL: News Email Weather Video, tap Get. 6. Enter your Touch ID or Apple ID, if prompted. 7 ...

  6. Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

  7. Personalize your background image, sounds, and toolbar ...

    help.aol.com/articles/personalize-your...

    4. Click the Sounds tab. 5. Click Customize My Sounds. 6. Search for a sound or select a category from the "All" menu at the top-right. 7. Optionally, click the Preview button to play a sound. 8. Click Apply to choose a sound.

  8. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    ATTENTION! TESTING OF THE EMERGENCY SIREN SYSTEM IS COMPLETE. PLEASE REGARD ANY FURTHER ALARMS.” The Pilgrim Power Plant never had any major emergencies, but if there was one, the sirens would sound in a tone, followed by a voice announcement. As of 2023, the sirens are still there, but it is unclear whether they are still active.

  9. The rate dropped to 6.69% from 6.81% last week, mortgage buyer Freddie Mac said Thursday. Borrowing costs on 15-year fixed-rate mortgages, popular with homeowners seeking to refinance their home ...