In StarCraft II, the Terran unit that detects cloaked enemies and deploys Auto-Turrets is the Raven.
The Raven is a Terran mechanical support aircraft. It provides mobile detection, allowing Terran forces to see cloaked or burrowed enemies. This makes it valuable against units such as Dark Templar, Banshees, and burrowed Zerg attackers.
Ravens also use energy-based abilities, including Auto-Turrets. These temporary automated weapons can be placed on the battlefield to attack nearby targets and create additional pressure or defensive coverage. The Raven’s abilities make it a utility unit rather than a conventional damage-dealing aircraft.
The Raven replaced the original StarCraft Science Vessel as the principal Terran detector in StarCraft II. The Science Vessel remains an important unit in the original game and Brood War, which is why players sometimes associate its name with StarCraft detection. The Medivac, by contrast, transports and heals troops.