0
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.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoUsually around 10 years, but you must test your alarm regularly because different quality smoke detectors last for different amounts of time.
Wiki User
∙ 14y agoIt'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.
Wiki User
∙ 6y agomany it depends
Add your answer:
Earn +20 pts
How many square meter does the smoke detector cover?
83m^2
How many smoke detectors are needed in a house?
Ideally, a smoke detector for every room should be in place.
How many lives are saved by animal testing a year?
millions of lives are saved by animal testing
How does a fire alarm detect smoke?
Smoke detectors work in several ways. A point to point smoke detector detects smoke when the beam projected by the transmitter is obscured in a measurable way and detected by the receiver. A photoelectric detector sees smoke particles inside the detection chamber of the smoke detector because light inside the chamber is scattered in a measurable way. An ionization smoke detector detects smoke because the smoke particles change the 'charge' on the detection plate inside the smoke detector.
How many lives have airbags saved?
lots and lots of lives have been saved by airbags. its indeed very cool.
Has the four wheeler invention saved lives?
Yes, this futuristic invention they call a "four wheeler" has saved many lives.
What did Paul Revere do to help patriot cause?
he saved many lives by yelling the regulators are coming although he was captured he still saved many lives
What did Paul Revere do to help the patriots cause?
he saved many lives by yelling the regulators are coming although he was captured he still saved many lives
How many lives have been saved by organ donations?
many soo yeah many were saved like BILLIONS
How many kwh would a smoke detector use that is 120 VAC 60 HZ 80mA?
kW = I x E x pf/1000. Take this figure and multiply it by the amount of hours that the smoke detector is in operation. pf = power factor.
How many lives have crumple zones saved?
lots
How many lives has pacemakers saved?
3,613,435 and counting
