A sensor tower uses passive and active thermal and electromagnetic scanning along with input from seismic sensors and Doppler analysis, enabling it to pinpoint any target within range. Even foes hiding behind terrain features can be detected, although they won't be identified without visual verification. The multi-spectrum output enables foes to easily detect the presence of a sensor tower and identify the location of the base that holds it. Some strategies revolve around "spoofing" the tower with decoy units or simply staying outside its range. Terran commanders have been known to counter by erecting sensor towers in fake base locations just to keep enemies guessing.
Sensor tower technology was in use during the Brood War.
The Dominion Special Forces utilize a more sensitive variant of the sensor tower. After the detection of an overlarge moth led to the vaporization of a Mar Sara trading post, these sensor towers had their perceptive power dialed back slightly.
Other players can see the radius as a colored circle on their minimap, revealing its location.
- Upgrades and Abilities
Wings of Liberty
In the Wings of Liberty mission "Outbreak", the player is given access to the sensor tower. In this mission a tower is pre-constructed on a hill overlooking the main entrances to their base to allow forward knowledge of attacks from the infested colonists.
- Blizzard staff. Sensor Tower. Blizzard Entertainment. Accessed 2009-02-10.
- Waugh, James. "A War On" (February 12, 2013). Blizzard Entertainment. A War On. Accessed from Blizzard Short Stories Hub on 2021-05-14.
- Blizzard Entertainment. StarCraft II: Legacy of the Void. Collections Tab: Skins. July 19, 2017.