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

First Alert BRK 9120B SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack

About this item

• 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