When to Replace
Smoke Detector
Every 10 years
Sensors degrade regardless of battery changes. Manufacturer date determines replacement.
Replace sooner if
- Test button doesn't trigger alarm
- Chirping after battery change
- Manufacture date over 10 years
Make it last
- Test monthly using the test button
- Replace batteries annually or get 10-year sealed units
- Install one on every level of home
whentoreplace.com
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