Place this clip right after the elevator arrives in your timeline, starting with a bell ding sound effect to set the lift, then this broadcast, then a panicked reaction sound underneath the next cut for the characters responding.
About this sound
This clip is a short Korean emergency announcement for an elevator fire, lasting about four seconds, delivered as a clear official broadcast voice. It feels tense and alarming, the kind of serious alert that instantly signals danger and makes listeners stop and pay attention. It is the government-use version used for elevator fire broadcasts.