First Alert Hardwire Smoke Alarm with 10-Year Battery Backup FIRST ALERT 10 YEAR First Alerts 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.

10-Year battery backup provides continuous protection during power outages

Through early interconnect, when one alarm sounds, all compatible

Alarm indicator visually identifies the unit that initiated the alarm

End-of-life warning lets you know when it’s time to replace the alarm

Product Dimensions:

3.50 x 4.00 x 7.00 in

0.90 lbs

Shipping Dimensions:

4.80 x 4.60 x 8.50 in