The First Alert 10-Year Smoke and Carbon Monoxide Alarm combines reliable 2-in-1 protection against both smoke and carbon monoxide threats in a convenient, easy-to-install unit. This battery-powered alarm features a photoelectric smoke sensor and an electrochemical CO sensor to detect dangerous conditions in your home.

The alarm includes a built-in 10-year sealed battery that eliminates the need for battery replacements and low battery chirps for the entire life of the device. Its slim profile design is half the depth of a standard alarm, making it unobtrusive and easy to mount in bedrooms, living rooms, and basements. End-of-life warnings alert you when it's time to replace the alarm after a decade of service.

The test/silence button allows for efficient testing to ensure the alarm is working properly. The recommended placement is one alarm in every bedroom, living room, and basement. Carbon monoxide is an invisible, odorless, and colorless gas that cannot be seen, heard, or smelled, making this alarm a potentially life-saving addition to any home.