Coverage matters
U.S. Fire Administration guidance currently calls for smoke alarms in sleeping rooms, outside sleeping areas and on every level of the home.
Know the exact product
Alarm type, power source and replacement date can differ, so the model's instructions matter.
Treat faults seriously
An alarm that is damaged, expired or not functioning as intended should be addressed promptly.
Local rules vary
Building and fire-code requirements differ by jurisdiction and housing type.
General prevention information only. In an active emergency, follow local emergency services and official instructions. Do not attempt electrical, structural, fire-suppression, hazardous-chemical or other safety-critical work without appropriate professional competence.