Where do I find the date of manufacture on my smoke alarm?
Where do I find the date of manufacture on my smoke alarm? The date of manufacture is stamped on the front or back of most alarms. If you have to remove an alarm from its bracket to get the information, be sure to replace the alarm when you are finished. If there is no date on an alarm, it has expired and must be replaced. When do I need to replace my smoke alarm? Battery-powered smoke alarms that are more than 10 years old, or have expired must be replaced with alarms with 10-year, sealed, non-rechargeable, non-replaceable batteries. They must...