Good surveillance detectors identify active devices that transmit on any electromagnetic frequency, as well as recognizing the power supplies required to keep such bugs functional.
More information about the gear available on the Wookieepedia article.
SURVEILLANCE DETECTOR[1] [2][]
A surveillance detector adds two boost dice to any Perception or Vigilance checks to attempt to identify the presence of a bug within short range of the user.
- ↑ Gadgets and Gear: The Essential Collection of Weapons and Equipment (Page 127)
- ↑ Disciples of Harmony: A Sourcebook for Consulars (Page 48)