An audio sensor, also known as an audio pickup, or auditory sensor,[source?] was a type of sensor that detected sound. The component was used in 3PO units, installed in the lower head of enforcer droids,[source?] and was also featured in the helmets worn by Imperial stormtroopers.
- Rogue One: A Star Wars Story (First appearance)
- "The Red One"—From a Certain Point of View
- Star Wars: Episode VIII The Last Jedi (Mentioned only) (First identified as audio sensor)
- Star Wars: The Last Jedi: Expanded Edition
- Ultimate Star Wars (First mentioned)
- Star Wars: The Complete Visual Dictionary, New Edition