Here are some thoughts.
NFPA 72
11.8.3.5 Specific Locations.
(2) Smoke alarms and smoke detectors shall not be located within unfinished attics or garages or in other spaces where temperatures can fall below 4 degrees C(40 degrees F) or exceed 38 degrees C(100degrees F). So if your attic reaches temperatures greater than 100 degrees F, no smokes.
Do you notice how it states smoke alarms and smoke detectors?
smoke alarms are what most electricians and homeowners install. The definition of smoke alarm and smoke detector are in NFPA 72.
Smoke detectors have to be connected to an alarm panel, smoke alarms are 'stand alone' units.
Pierre
