Code Library › Volume 1 › Section 9.10 — Fire Protection
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.10.19.6.Silencing of Smoke Alarms

(1) Except as permitted in Sentence (2), a manually operated device shall be incorporated within the circuitry of a smoke alarm installed in a dwelling unit so that the signal emitted by the smoke alarm can be silenced for a period of not more than 10 min, after which the smoke alarm will reset and sound again if the level of smoke in the vicinity is sufficient to re- actuate it. (2) Suites of residential occupancy equipped with smoke detectors installed to CAN/ULC-S524, “Standard for Installation of Fire Alarm Systems,” which are part of the fire alarm system in lieu of smoke alarms as permitted in Sentence 9.10.19.4.(3), need not incorporate the manually operated device required in Sentence (1).
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.