What replaces the alarm on your ceiling?
Type the model number printed on the back of your smoke or CO alarm. Each model page covers how old it is, when it is due, the adapter that fits the old wiring, and which alarms can share its loop. Every fact links to where it came from.
Start here
Brands
- Kidde Kidde model pages on AlarmSwap: where the date is, when the alarm is due, and which adapter those pages cite.
- Firex Firex model pages on AlarmSwap, including the replacement and adapter facts cited from Kidde for these alarms.
- First Alert / BRK Where the date-and-expiry guide says First Alert prints the manufacture date, and when it says to replace the alarm. No First Alert model page yet.
Models
How this site works
- We only restate what alarm makers, NFPA, USFA and CPSC publish, in our own words.
- Each fact carries a numbered link to its source and the date we last checked it.
- If a maker doesn't say something, we say so rather than guess.