First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm

Price: $49.99 - $44.98
(as of Sep 16, 2026 23:18:54 UTC – Details)


Install convenient 2-in-1 protection with the First Alert SMICO110 10-Year Battery Combination Smoke & Carbon Monoxide Alarm. This combination smoke and carbon monoxide alarm meets new industry standards, is easy to install and doesn’t require battery replacements for a decade.
First Alert’s Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
End-of-life warning lets you know when it’s time to replace the alarm
Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
Test/silence button for efficient testing to ensure alarm is working properly
Customers find the smoke and carbon monoxide alarm easy to install and appreciate its 10-year battery life. However, they report mixed experiences with reliability, with some units working well while others stop working within a year and a half. Moreover, durability is a concern as units may not last the full 10 years and the test button can break on first use. Additionally, customers express frustration with the lack of instructions and mixed feelings about safety.