Smoke alarms and detectors must not be located in unfinished attics or garages if temperatures can fall below what temperature?

Smoke alarms and detectors are critical for fire safety, and their placement is governed by certain temperature criteria due to the effects of extreme temperatures on their functionality. The correct temperature threshold for not locating smoke alarms in unfinished attics or garages is 4°C (40°F).

At temperatures below this threshold, smoke detectors may experience a lack of reliability and performance issues. Cold temperatures can affect the battery life and the sensor's ability to detect smoke properly. In unfinished areas like attics and garages, temperatures can fluctuate significantly, potentially dropping below 4°C. By adhering to this guideline, you ensure that smoke alarms maintain optimal functionality, providing effective fire detection in residential and commercial spaces.