非ひ常じょうブザー

noun

emergency buzzer; emergency alarm

Refers to a device that emits a loud sound to alert people in an emergency, such as in buildings, trains, or public facilities.

• 火か災さい報ほう知ち器きの非ひ常じょうブザーが鳴なった。

  The emergency buzzer of the fire alarm went off.

• 駅えきのホームで非ひ常じょうブザーが押おされた。

  The emergency buzzer was pressed on the station platform.