An emergency siren functioned as a sound-generating mechanism designed to emit a loud, attention-grabbing alarm. These systems were frequently implemented across various locations and could be triggered to signal the need for immediate departure from the area. At its peak, the Galactic Empire utilized an emergency siren at the Imperial Palace located on Coruscant to alert personnel to a security breach.
Numerous starships also incorporated these sirens, notably the Hammerhead-class cruisers deployed by the Galactic Republic Navy during the Jedi Civil War, as well as contemporary CR90 corvettes. A siren's activation on these vessels typically signified damage or other hazardous circumstances, such as the commencement of battle.