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  2. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    An alarm device is a mechanism that gives an audible, visual, combination, or other kind of alarm signal to alert someone to a problem or condition that requires urgent attention. Etymology [ edit ]

  3. Fire alarm notification appliance - Wikipedia

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

    Voice evacuation systems (also called Voice Alarm Systems) have become popular in most countries. Voice evacuation alarms typically are not as loud as horns or bells (although generally standards require the same minimum sound pressure levels), and usually sound an alarm tone (typically a slow whoop, code-3, or chime tone, although this depends ...

  4. Manual fire alarm activation - Wikipedia

    en.wikipedia.org/wiki/Manual_fire_alarm_activation

    When the station was pulled, the security officers in the building would look up 5-3-1 in a master list of codes. After finding the location of the pull, they should check to see if there is a real fire. If there was, they would evacuate the building and call the fire department. Antique Holtzer-Cabot coded pull station

  5. Emergency evacuation - Wikipedia

    en.wikipedia.org/wiki/Emergency_evacuation

    This is a critical factor for escaping fast out of the building or to a "safe haven". During an emergency evacuation, people do not immediately react after hearing the alarm signal. This is because an evacuation drill is more common. Therefore, they will start evacuating when there is more information given about the degree of danger.

  6. Fulton surface-to-air recovery system - Wikipedia

    en.wikipedia.org/wiki/Fulton_surface-to-air...

    The Fulton system in use The Fulton system in use from below. The Fulton surface-to-air recovery system (STARS), also known as Skyhook, is a system used by the Central Intelligence Agency (CIA), United States Air Force, and United States Navy for retrieving individuals on the ground using aircraft such as the MC-130E Combat Talon I and B-17 Flying Fortress.

  7. Screenshot - Wikipedia

    en.wikipedia.org/wiki/Screenshot

    Screenshot (also known as screen capture or screen grab) is a digital image that shows the contents of a computer display. A screenshot is created by the operating system or software running on the device powering the display.

  8. Augmented reality - Wikipedia

    en.wikipedia.org/wiki/Augmented_reality

    A virtual retinal display (VRD) is a personal display device under development at the University of Washington's Human Interface Technology Laboratory under Dr. Thomas A. Furness III. [100] With this technology, a display is scanned directly onto the retina of a viewer's eye. This results in bright images with high resolution and high contrast.

  9. Automatic activation device - Wikipedia

    en.wikipedia.org/wiki/Automatic_activation_device

    CYPRES II panel. In skydiving, an automatic activation device (AAD) is a dead man's switch consisting of an electronic-pyrotechnic or mechanical device that automatically activates the opening sequence of the main or reserve parachute container when the AAD is falling below a preset altitude and above a preset descent speed.