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Perimeter Alarm is a specialization featured in Battlefield 1 for the Scout kit. Introduced as part of the In the Name of the Tsar expansion, it was added to the Community Test Environment in August 2017. When a player's Tripwire Bomb is activated, any enemy within 15 meters of the detonation site is spotted on the map.

The specialization is unlocked at the completion of the assignment Eagle Eye (Veteran), which involves six criteria and that only five of them need to be completed in order to unlock the specialization.