Auto Defense Turret

The Auto Defense Turret is an automatic turret that opens fire on any enemy that comes within its range. Samus Aran encounters this turret on the Space Pirates frigate Orpheon and on Tallon IV in Magmoor Caverns at the Monitor Station, Space Pirate base in Phendrana Drifts, and the Phazon Mines. They have a weak casing and can easily be destroyed by a Missile, Super Missile, or Charge Beam shot. They eventually become stronger as Samus gets closer to Metroid Prime, with Mega Turrets replacing them in the Phazon Mines.

Trivia
Note: Samus' Scan Visor seems to be able to bypass this problem.
 * A "Scan Point" in the Orpheon's Deck Beta Transit Hall, states that the pirates change the Auto Defense Turret security codes every other lunar cycle and warns that using the older deactivation codes may result in said turret's activation.


 * Auto Defense Turrets become more durable after they are first encountered on the Orpheon level. Auto Defense Turrets on Tallon IV require more missile shots to destroy them (these turrets should not be confused with Mega Turrets). Orpheon's Auto Defense Turrets can be destroyed by a single missile (and conveniently drop Missile Ammo) or a Charge Beam shot.
 * Notably, if Samus fires a Wave Beam at the Auto Defense Turret and destroys it, the Turret, prior to it's destruction, is animated in a manner where it fires continuous shots and is swiveling up and down similar to a glitch error in turrets or if ammunition is exposed to fire. A similar reaction occurs if Samus uses a wave beam against a Mega Turret.
 * Different beams affect the Auto defense turrets differently. The Power Beam is the slowest way to destroy one. After about 20 shots, or about two charged shots, it explodes. With the Wave Beam, it waves out of control, shooting wildly, the explodes, the Ice Beam freezes it, then you can explode it with a missile, and the Plasma Beam blows it up quick.