First Alert Hard-Wired w/Battery Back-Up Photoelectric Smoke and Carbon Monoxide Detector 1 each

First Alert SMCO110V-AC smoke and carbon monoxide alarm features a photoelectric sensor and a 10-Year Lithium Battery Backup.

Product Features:

• Precision detection technology helps reduce cooking nuisance alarms and provides early warning
• Voice and location alerts tell you what the danger is and its location to help you escape safely
• Through early warning interconnect, when one alarm sounds, all compatible alarms will sound