First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack

• 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.

• Through early warning interconnect, when one alarm sounds, all compatible alarms will sound

• Battery backup provides continuous protection during power outages

• Alarm indicator visually identifies the unit that initiated the alarm

• Quick Connect Plug included allows for easy installation with no need to rewire