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  2. Xbox 360 technical problems - Wikipedia

    en.wikipedia.org/wiki/Xbox_360_technical_problems

    On July 5, 2007, Peter Moore, the Vice President of Microsoft's Interactive Entertainment Business division published an open letter recognizing the console's problems, as well as announcing a three-year warranty from the original date of purchase for every Xbox 360 console that experiences the "general hardware failure" indicated by three ...

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    The use of flashing lights and sirens is colloquially known as blues and twos, which refers to the blue lights and the two-tone siren once commonplace (although most sirens now use a range of tones). In the UK, only blue lights are used to denote emergency vehicles (although other colours may be used as sidelights, stop indicators, etc.).

  4. Level crossing signals - Wikipedia

    en.wikipedia.org/wiki/Level_crossing_signals

    The basic signal consists of flashing red lights, a crossbuck and an alarm (either a bell, a speaker that mimics a bell sound or an electronic siren), attached to a mast. At most crossings, the signals will activate about 30 seconds before the train arrives but there are sensors measuring speed so that the crossing knows when to activate; so ...

  5. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    The Hundred Code is a three-digit police code system. [3] This code is usually pronounced digit-by-digit, using a radio alphabet for any letters, as 505 "five zero five" or 207A "two zero seven Alpha".

  6. Fire alarm notification appliance - Wikipedia

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

    From NFPA 72, 2002 Edition: “7.4.2.1* To ensure that audible public mode signals are clearly heard, unless otherwise permitted by 7.4.2.2 through 7.4.2.5, they shall have a sound level at least 15 dB above the average ambient sound level or 5 dB above the maximum sound level having a duration of at least 60 seconds, whichever is greater ...

  7. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A false alarm also occurs when there is an alarm system malfunction that results in an alarm state. In all three circumstances, the source of the problem should be immediately found and fixed, so that responders will not lose confidence in the alarm reports.

  8. Screen of death - Wikipedia

    en.wikipedia.org/wiki/Screen_of_death

    On the PlayStation 2, the red screen of death bears similarities to the regular startup, such as the pitched-down menu screen audio and its subsequent ambient noises, alongside a faint whistle. After the normal startup, a red screen will appear with a message saying "Please insert a PlayStation or PlayStation 2 format

  9. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    Sound of the general-alarm signal ⓘ Sound of the water-alarm signal ⓘ Switzerland currently has 8,500 mobile and stationary civil defense sirens, which can alert 99% of the population. [57] There are also 700 sirens located near dams. [57] Every year on the first Wednesday of February, Switzerland's sirens are tested to see if they are ...