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- 4 Precautions at the time of installation
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4 Precautions at the time of installation
Last Updated June 22, 2023
When installed on the ceiling
The center of the residential fire alarm will be installed at least 60 cm away from the wall.
If there is a beam, etc., install it at least 60 cm away from it.
When installing near the outlet of an air conditioner, etc., smoke flows by the blowing wind.
Please keep it at least 1.5m as it may not be possible to detect it effectively.
When installing on a wall
Since smoke is difficult to stay at the corner of the ceiling, the center of the fire alarm for residential use is the center of the fire alarm.
Install it so that it comes between 15cm and 50 from the ceiling.
Be careful!
・When installing in a place where smoke or steam is likely to occur, such as a kitchen, attach it when cooking, avoid places where smoke or steam directly apply.
About installation support
Fire Bureau provides support to those who have difficulty installing it on their own. 
Inquiries to this page
Prevention Division, Fire Bureau Prevention Department
Telephone: 045-334-6406
Telephone: 045-334-6406
Fax: 045-334-6610
Email address: sy-yobo@city.yokohama.lg.jp
Page ID: 718-871-010
