Alarm brands

Each hub collects the model pages and guide lines we already have for that brand. It does not add facts of its own.

• 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.