First Alert 2-In-1 10-Year Locked Battery Backup Ionization AC/DC Smoke & Carbon Monoxide Alarm

Install convenient 2-in-1 protection against both smoke and carbon monoxide with the SMICO105-AC interconnect hardwire combination smoke and carbon monoxide alarm. Includes 10-year battery backup. Meets industry standards and can interconnect with other compatible alarms to create a whole home safety network to help provide an early warning. Includes easy adapters to replace old hardwired alarm, no rewiring is needed. Features Precision Detection technology which provides early warning advanced protection along with a reduction in cooking nuisance alerts.