Sentry Pylons are automated defenses of the Necrons. Despite looking like a static piece of artillery/turret, Sentry Pylons can actually move, but their style of locomotion is through teleportation as they can't fire on the move. This makes the Sentry Pylons a type of auto-piloted vehicle in a sense. Sentry Pylons are a smaller version of the Necron Pylon, these devices are used tactically either in the fields of war or to defend slumbering Tomb Worlds from outside intruders. Sentry Pylons can carry a variety of weapons of mass non-consensual Rape such as Death Rays and Heat Cannons. Some are equipped with the Gauss Exterminator to engage enemy aircraft at extremely long range. The Sentry Pylon can also be used against ground targets with no loss of effectiveness.
Like all things Necron, the Sentry Pylon are one tough nut to crack and sufficient firepower is needed to break apart this small engine of destruction.