The First Alert® SMCO100 Battery-Operated 2-in1 Combination Smoke and Carbon Monoxide Alarm provides protection against both threats in a single alarm. Installation of the battery-operated detector is simple - no wiring is required. Add fire and CO protection throughout your home in minutes and help prevent unwanted removal of the battery or alarm using the optional locking features. Easily test the battery-operated combination detector using the single test/silence button to help ensure it is operating properly and silence false alarms. A low-battery warning will tell you when to replace the alarm battery. Detectors themselves should be replaced at least every 10 years. The end-of-life warning will help notify you when it's time to replace. See user's manual for information on how and when to test and replace detectors.
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The First Alert® SMCO100 Battery-Operated 2-in1 Combination Smoke and Carbon Monoxide Alarm provides protection against both threats in a single alarm. Installation of the battery-operated detector is simple - no wiring is required. Add fire and CO protection throughout your home in minutes and help prevent unwanted removal of the battery or alarm using the optional locking features. Easily test the battery-operated combination detector using the single test/silence button to help ensure it is operating properly and silence false alarms. A low-battery warning will tell you when to replace the alarm battery. Detectors themselves should be replaced at least every 10 years. The end-of-life warning will help notify you when it's time to replace. See user's manual for information on how and when to test and replace detectors.

The First Alert® SMICO110 10-Year Battery Smoke and Carbon Monoxide Alarm provides reliable 2-in-1 protection against both fire and carbon monoxide in an easy-to-install detector. Featuring superior safety features like a 1-touch test/silence button to confirm the combination alarm is functioning correctly and silence false alarms, the combination alarm features a built-in 10-year sealed battery that provides uninterrupted power for the life of the detector. No need to worry about the cost or hassle of battery replacements for a decade. An end-of-life warning lets you know when the alarm should be replaced.

The First Alert® SMCO200V Battery-Operated 2-in-1 Smoke Alarm and Carbon Monoxide Alarm provides reliable protection against both threats. Its alarm features voice and location alerts to help you escape safely. Our Precision Detection advanced-sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency. The voice and location alert feature tells you what the danger is and its location to help you escape safely. This combo smoke and CO detector also has a slim profile, measuring only half the depth of a standard alarm. The sleek, modern design seamlessly blends into most décor and is easy to install throughout your home.