Turret

Turrets are mounted on ceilings and will shoot the player upon being triggered by a nearby Security Camera. They deactivate if damaged sufficiently, if the controlling camera is destroyed, or if the camera stops detecting hostiles. If they deactivate before destroyed, they will be completely repaired.

Deactivated turrets can be destroyed occasionally, however on the other hand, occasionally the said turret cannot be destructed. It is unknown which factor decides this. (bug?)

Trivia

 * Before Update 10.5.0, the Corpus Turret along with Corpus Security Camera did not level along with the other Corpus units, instead they remained at level 1.