First Alert hardwired combination smoke and carbon monoxide detector provides 2-in-1 protection for your home with advanced safety features. This hardwired alarm connects directly to your home's electrical system with battery backup to ensure continuous protection during power outages.

Features Precision Detection advanced sensing technology that meets the latest UL8 industry standards to reduce false alarms from cooking smoke while maintaining reliable fire and CO detection. The interconnect capability allows this alarm to communicate with other compatible First Alert detectors - when one alarm sounds, all connected units will sound throughout your home for maximum early warning protection.

Installation is simplified with the Quick Connect Plug system that works with most existing detector wiring without requiring rewiring. The alarm includes an indicator light to identify which unit initiated the alarm, test/silence button for easy operation, and end-of-life warning to alert you when replacement is needed. Sound level reaches 85dB at 10 feet to ensure you'll hear the alarm throughout your home.