First Alert smoke and CO alarm with 10-year built-in battery
Smart combo alarm with electrochemical CO sensing and photoelectric smoke sensor. Delivers 85 dB alert as CO or smoke levels rise; built-in 10-year battery supports long-term operation. Customers note easy installation but mixed reliability and battery opinions
Highlights
- 10-year battery life
- electrochemical CO sensing
- photoelectric smoke sensor
Pros
- combo CO and smoke detection
- built-in 10-year battery
- easy installation
- electrochemical CO sensing
- photoelectric smoke sensor
Cons
- mixed reliability reported by users
- some false alarms reported
- battery longevity concerns
Best For
Features
- Built-in 10-year battery provides long-term power without replacement
- Electrochemical CO sensing with photoelectric smoke sensor for smoldering fires
- 85-decibel alarm signals when CO or smoke levels rise
- Low-profile, wall-mounted design blends into surroundings
- End-of-life chirp indicates when replacement is needed; manufacturing date printed on unit
