- Reliable Detector: The First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO alarm provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install detector
- Special Technology: 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
- Long-Lasting Battery: 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
- Replacement Alert: End-of-life warning lets you know when it’s time to replace the alarm
- Design: Slim profile design is half the depth of a standard alarm
