Alarm requirements vary
Placement and legal requirements differ by jurisdiction and building type.
Maintenance matters
Fuel-burning appliances and venting systems should be serviced by qualified professionals as required.
Do not diagnose a source yourself
Repeated alarm activation or suspected equipment problems require appropriate emergency or professional response.
Keep models and dates recorded
Household records can include alarm model information and replacement dates.
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.