Your smoke alarm needs replacing every 10 years! Have you checked the date?
As is the case with the majority of our home electrical devices, smoke alarms cannot last forever. Smoke alarm sensors will degrade over time, leading to
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Change your clock and check your smoke alarm - Fire and Rescue NSW
How Often Do You Need to Replace Smoke Detectors
All smoke alarms should be replaced after 10 years
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10 Years of Alarm SAFETY then replace the sound that saves!
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Does my fire alarm expire?
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