BRK

Interconnect Hardwire Smoke Alarm with Battery Backup. Interconnects with most First Alert and BRK hardwired alarms. When one alarm sounds, all compatible alarms sound (up to 12 smoke alarms and 6 other alarms). Smoke particles of varying number and size are produced in all fires. For maximum protection, use both ionization and photoelectric sensing technologies. Ionization alarms are generally more sensitive to fast flaming fires and photoelectric alarms are generally more sensitive to smoldering fires. End-of-Life Warning, Precision Detection, Battery Backup, Hardwire Interconnectivity, Hardwire Quick Connect Plug Included.

Kathleen. Conway, SC. Fri Feb 27 2026

Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup & Voice Alerts. Interconnects with most First Alert and BRK hardwired alarms. When one alarm sounds, all compatible alarms sound up to 12 smoke alarms and 6 other CO/heat alarms).

Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup & Voice Alerts. Easy install & battey replacement, add protection in minutes. A battery pull tab is also included to keep the batteries fresh until the home is occupied.

Stacy. US. Wed Oct 22 2025

The First Alert SMI100 Battery-Operated Smoke Alarm is equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards. This battery-operated smoke alarm is easy to install and the front access battery compartment makes for easy battery replacements.

Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup. Direct wire-in with 9V battery backup. Hardwired with battery backup for protection during power outages.

Love it. Michelle. Fri Jul 11 2025

Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup. Smart Interconnect, interconnects with most First Alert and BRK hardwired alarms. When one alarm sounds, all compatible alarms sound (up to 12 smoke alarms and 6 other CO/heat alarms).

Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts. Voice Warning with Location, voice tells what the danger is and its location. Smoke particles of varying number and size are produced in all fires. For maximum protection, use both ionization and photoelectric sensing technologies. Ionization alarms are generally more sensitive to fast flaming fires and photoelectric alarms are generally more sensitive to smoldering fires.