First Alert Interconnect Hardwire Ionization Smoke Alarm with 10-Year Battery Backup

The SMI105-AC interconnect hardwire smoke alarm with 10-year battery backup. Features First Alert's Precision Detection advanced sensing technology and meets industry standards. Precision Detection provides advanced protection early warning as well as a reduced number of nuisance cooking alerts. Interconnect multiple alarms together to help provide an early warning throughout your whole home and have peace of mind knowing the 10-year battery backup provides continuous protection in the event of a power outage.