noun
false alarm; accidental alarm
Refers to an alarm that is triggered without a real threat, such as a fire alarm set off by cooking smoke or a security alarm caused by a pet.
煙探知機の誤警報で、全員が避難した。
Everyone evacuated because of a false alarm from the smoke detector.
誤警報が頻発すると、本当の緊急時
If false alarms occur frequently, responses to real emergencies will be delayed.