Are you a
Homeowner?
Are you a
Homeowner?
Yes. The FA6611-R is the direct replacement for the end-of-life ST-623E smoke alarm. It offers the same escape light functionality with upgrades including a 10-year sensor life, quiet self-test, Sleep Easy mode, and a slimmer 32mm profile. If your ST-623E is beeping continuously, it has reached end of life and should be replaced with the FA6611-R.
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