How many lives has the smoke detector saved?

Answer 1

A self-contained residential smoke alarm lasts about 12 years, but must be replaced no later than 10 years for safety. Some units now have a 10-year battery life or other features that cannot be extended, thus requiring it to be discarded and replaced at 10 years.

Answer 2

Usually around 10 years, but you must test your alarm regularly because different quality smoke detectors last for different amounts of time.

Answer 3

It's recommended that a smoke detector alarm be replaced every 8-10 years. It is also helpful to write the date of purchase on your smoke detector alarm for future reference.

Answer 4

many it depends