Spire Beacons are Chimeran devices that alert all Chimeran forces if there has been a Spire breach.
Resistance: Burning SkiesEdit
While on Ellis Island, Tom Riley and Ellie Martinez discovered a Spire Beacon. Riley wanted to activate it, but Ellie stopped him. Seconds later however, Ellie accidentally activated a trip wire, activating the Spire Beacon. Ellie then decided to destroy it.