This is the 9502nd most frequent Korean word.
경보기
Alarm.
In this sentence, '경보기' refers to a device used for detecting emergencies, specifically a fire alarm.
경보기는 화재 감지에 사용됩니다.
The alarm is used for fire detection.
Here, '경보기' describes a household alarm system that alerts when an entry breach is detected.
집에 들어오자마자 경보기가 울리기 시작했어요.
As soon as I entered the house, the alarm began to sound.
In this context, '경보기' denotes the car alarm system, which is a security feature to alert against theft or tampering.