Civil defense

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Warning the population in case of a coming disaster[edit]

  • Thunderbolt 1003 Federal Signal
    Thunderbolt 1003
    Federal Signal
  • AL-8000 American Signal Corporation
    AL-8000
    American Signal Corporation
  • Flood siren
    Flood siren
  • SD-10 Federal Signal
    SD-10
    Federal Signal
  • Warning-Signal of a German Siren

France[edit]

  • Beginning of the alert: the sound warning is made of three sequences of sound going up and down lasting one minute, separated by a silence lasting five seconds. End of the alert: continuous signal of 380 Hz, lasting thirty seconds.
    Beginning of the alert: the sound warning is made of three sequences of sound going up and down lasting one minute, separated by a silence lasting five seconds. End of the alert: continuous signal of 380 Hz, lasting thirty seconds.
  • In case of a signal generated by electronics, a cycle is made of a two-second rise from 300 Hz to 600 Hz, then a two-second decrease back to 300 Hz; in case of an electromechanical siren, a cycle is made of seven second where the motor is on (the sound rises to 380 Hz), then five seconds where the motor is shut down.
    In case of a signal generated by electronics, a cycle is made of a two-second rise from 300 Hz to 600 Hz, then a two-second decrease back to 300 Hz; in case of an electromechanical siren, a cycle is made of seven second where the motor is on (the sound rises to 380 Hz), then five seconds where the motor is shut down.

Switzerland[edit]

  • General Alarm
    General Alarm
  • General Alarm
  • Water Alarm
    Water Alarm
  • Water Alarm
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