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  2. 7 Best Alarm Clocks for Heavy Sleepers, According to a ... - AOL

    www.aol.com/lifestyle/7-best-alarm-clocks-heavy...

    Shop the best loud alarm clocks for heavy sleepers on Amazon and more that are recommended by our editor, who tested several of them, and a sleep psychologist. 7 Best Alarm Clocks for Heavy ...

  3. Chrysler Air-Raid Siren - Wikipedia

    en.wikipedia.org/wiki/Chrysler_Air-Raid_Siren

    Siren at the Walter P. Chrysler Museum in 2011. The Chrysler Air Raid Siren is an outdoor warning siren produced during the Cold War era that has an output of 138 dB(C) at 100 feet.

  4. Alarm clock - Wikipedia

    en.wikipedia.org/wiki/Alarm_clock

    This is an accepted version of this page This is the latest accepted revision, reviewed on 27 December 2024. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...

  5. Alarmo - Wikipedia

    en.wikipedia.org/wiki/Alarmo

    As a ‘smart’ alarm clock it has a 2.4 GHz WiFi connectivity for firmware and content download. Unlike traditional alarm clocks, Alarmo uses a 24 GHz mmWave presence sensor [4] to detect motion during sleep and waking up. [2] The longer the user stays in bed without moving, the louder and more intense the sound of the alarm will become.

  6. The best alarm clock - AOL

    www.aol.com/news/best-alarm-clock-160000315.html

    By Rachel Cericola. For premium support please call: 800-290-4726 more ways to reach us

  7. Travel alarm clock - Wikipedia

    en.wikipedia.org/wiki/Travel_alarm_clock

    The alarm movement was also improved: there were alarm clocks with a repeater, inflated tone, or soft movement. Thanks to railroads and automobiles, the alarm clock was often used on trips. There are travel alarm clocks with a special case for this purpose. [7] A wristband travel alarm clock was patented in 1908 by the Eterna company.

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