First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack RFSMSXM Maximum airflow: 1

Maximum airflow: 1

and all necessary components for assembly

the digits automatically adjust when the unit is inverted

PREMIUM MATERIALS & DESIGN: Crafted from high-strength steel with sharp tungsten carbide tipped bit

First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack RFSMSXM Maximum airflow: 1About this item 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 Through early warning interconnect, when one alarm sounds, all compatible Quick Connect Plug allows for easy installation with no need to rewire Battery backup provides continuous protection during power outages Test silence button for