Translation guide
A device or system that warns people of fire, typically by making a loud sound. In Japanese, the most common term is 火災報知器 (かさいほうちき), but other expressions exist depending on context.
The physical device installed in buildings that detects smoke or heat and sounds an alarm.
Standard term for a fire alarm device. Used in formal and technical contexts, as well as everyday speech.
火災報知器が鳴った。
The fire alarm went off.
この建物には火災報知器が設置されています。
This building is equipped with fire alarms.
Abbreviation of 火災報知器, commonly used in spoken Japanese and informal writing.
火報が鳴ってるよ。
The fire alarm is ringing.
A more technical term, often used in legal or engineering contexts. Less common in daily conversation.
火災警報器の点検を行います。
We will inspect the fire alarm.
The audible warning sound produced by a fire alarm system.
Literally 'sound of the fire alarm'. Natural way to refer to the alarm sound.
火災報知器の音で目が覚めた。
I woke up to the sound of the fire alarm.
General term for alarm sound, can be used for fire alarms as well as other warning sounds.
警報音が鳴り響いた。
The alarm sound rang out.
The entire system including detectors, control panel, and alarms.
Refers to the fire alarm system as a whole, often used in building management or safety regulations.
火災報知設備の定期点検は義務です。
Regular inspection of the fire alarm system is mandatory.
Full technical term for automatic fire alarm system, used in official documents.
自動火災報知設備が作動しました。
The automatic fire alarm system activated.
The manual device on a wall that a person uses to trigger the fire alarm.
Common term for a manual fire alarm pull station. Often seen with a sign saying 火災発信機.
火災のときは発信機を押してください。
In case of fire, press the fire alarm call point.
Explicitly 'fire alarm call point'. Used on signs and in instructions.
火災発信機の場所を確認してください。
Please check the location of the fire alarm call point.
火災報知器 (かさいほうちき) is the general term for fire alarm devices, while 火災警報器 (かさいけいほうき) is more technical and often refers specifically to the alarm-sounding component. In everyday use, 火災報知器 is preferred.
火災報知器が鳴ったらすぐに避難してください。
If the fire alarm sounds, evacuate immediately.
A smoke detector (煙感知器, けむりかんちき) is a component of a fire alarm system, but 'fire alarm' usually refers to the whole alerting system. Use 火災報知器 for the alarm device, not just the sensor.