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  2. Carbon monoxide detector - Wikipedia

    en.wikipedia.org/wiki/Carbon_monoxide_detector

    In the late 1990s, Underwriters Laboratories changed the definition of a single station CO detector with a sound device to carbon monoxide (CO) alarm. This applies to all CO safety alarms that meet UL 2034 standard; [ 1 ] however for passive indicators and system devices that meet UL 2075, UL refers to these as carbon monoxide detectors .

  3. Here's Everything You Need to Know About Smoke Alarms - AOL

    www.aol.com/lifestyle/heres-everything-know...

    Here's a few things you can do to turn off smoke alarms and get it in working order. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...

  4. Gas detector - Wikipedia

    en.wikipedia.org/wiki/Gas_detector

    The ultrasonic gas leak detector then produces an alarm when there is an ultrasonic deviation from the normal condition of background noise. Ultrasonic gas leak detectors cannot measure gas concentration, but the device is able to determine the leak rate of an escaping gas because the ultrasonic sound level depends on the gas pressure and size ...

  5. Flame detector - Wikipedia

    en.wikipedia.org/wiki/Flame_detector

    A flame detector is a sensor designed to detect and respond to the presence of a flame or fire, allowing flame detection.Responses to a detected flame depend on the installation, but can include sounding an alarm, deactivating a fuel line (such as a propane or a natural gas line), and activating a fire suppression system.

  6. 2020 Nashville bombing - Wikipedia

    en.wikipedia.org/wiki/2020_Nashville_bombing

    The RV turned out to have a generator mounted to it in operation, which produced a sound reminiscent of a running vehicle engine. [ 77 ] [ 78 ] On December 27, a section of U.S. Highway 231 in nearby Wilson County, Tennessee , was shut down because a box truck was playing audio "similar to what was heard" before the bombing.

  7. Police Say Calif. Mom Was Causing Disturbance. Then They ...

    www.aol.com/police-calif-mom-causing-disturbance...

    If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453, or go to www.childhelp.org. All calls are toll-free and confidential. The hotline ...

  8. Missing Hawaiian woman Hannah Kobayashi has been found safe ...

    www.aol.com/missing-hawaiian-woman-hannah...

    Editor’s note: This article discusses suicide. If you or someone you know is struggling or in crisis, help is available. Call or text 988 or chat at 988lifeline.org.. Hannah Kobayashi has been ...

  9. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    The word alarm comes from the Old French a l'arme meaning "to the arms", or "to the weapons", telling armed men to pick up their weapons and get ready for action because an enemy may have suddenly appeared. [1] The word alarum is an archaic form of alarm. It was sometimes used as a call to arms in the stage directions of Elizabethan dramas. [2]

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