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  2. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    European Siren for fire detection system. A fire alarm notification appliance is an active fire protection component of a fire alarm system.A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action.

  3. List of sirens built by Alerting Communicators of America

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

    10 and 15 HP models were nearly the same, aside from motor used. The P-50 was and still is the loudest dual tone siren in the world. The P-15 (Single-tone) and P-50 were still being produced by ASC until 2002 and 2007, under different names (P-15 being the RM-127 and the P-50 being the RM-135/T-135 AC). The PN-20 was the last siren made by ACA.

  4. Wheelock (brand) - Wikipedia

    en.wikipedia.org/wiki/Wheelock_(brand)

    A Wheelock MT horn/strobe with a vertical (LSM) strobe. The Series MT (Multi-tone) was introduced in 1993. It features eight different tones including Continuous Horn, Code-3 Horn, March Time Horn, Code-3 Tone, Siren, Slow Whoop, Hi-Lo, and Bell. These could be set using DIP switches on the back of the horn. However, most of the tones did not ...

  5. Amazon’s Best Christmas Gifts of 2024: 39 You Can Buy for $30 ...

    www.aol.com/amazon-best-christmas-gifts-2024...

    Birdie Personal Safety Alarm. Price: $29.94. Give the gift of peace of mind with this personal safety alarm. The key chain alarm includes a loud siren and strobe light, and it is available in a ...

  6. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Wireless home alarm system control panel A house alarm. A security alarm is a system designed to detect intrusions, ... and can also trigger a siren, strobe, and/or ...

  7. Siren (alarm) - Wikipedia

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

    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 ⓘ An 1860s-era siren. [2] A siren is a loud noise-making device. There are two general types: mechanical and electronic.