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.
The fire alarm went off.
This building is equipped with fire alarms.
Abbreviation of 火災報知器, commonly used in spoken Japanese and informal writing.
The fire alarm is ringing.
A more technical term, often used in legal or engineering contexts. Less common in daily conversation.
We will inspect the fire alarm.
The audible warning sound produced by a fire alarm system.
The entire system including detectors, control panel, and alarms.
The manual device on a wall that a person uses to trigger the fire alarm.
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.
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.
The alarm sound rang out.
Full technical term for automatic fire alarm system, used in official documents.
The automatic fire alarm system activated.
Please check the location of the fire alarm call point.