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A siren is a settlement object in Fallout 4.


When built and properly powered, a siren can provide a valuable alarm to alert settlers in a settlement. The siren sits dormant until activated. When activated, either by the Sole Survivor or a settler, the siren lets out a loud wail, alerting settlers to danger, and telling them to stop what they're doing and draw their weapons. Placing a siren near a manned guard post allows the settler assigned to defense there to quickly raise an alarm during an attack.

The siren needs to be wired to an active generator in order to function, and it draws 1 power from the grid.


The siren is located under Resources → Miscellaneous.

Copper (5)
Rubber (1)
Steel (9)
rangeIcon range
levelIcon level
Siren (1)


  • When deactivating a siren, it sometimes cycles through one or more wails before actually quieting down.
  • Transmits power when activated making the siren useful for activating traps and closing powered doors during an attack.

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