The First Alert SMI100-AC Interconnect Hardwire Smoke Alarm with Battery Backup meets new industry standards utilizing First Alert's Precision Detection advanced sensing technology. This hardwire smoke alarm is easy to install and replace existing detectors with no need to rewire. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning. 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.

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 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. Sat Feb 28 2026

The SM200 Battery-Operated Smoke Alarm meets the latest industry standards featuring First Alert's advance sensing technology in an easy to install, slim profile alarm. First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.

Elan. Wed Jul 29 2026

The First Alert SM100V-AC Interconnect Hardwire Smoke Alarm with Battery Backup and Voice and Location Alerts meets the latest industry standards and is equipped with First Alert's Precision Detection advanced sensing technology. Battery backup provides protection during power outages and superior features to help provide an early warning and guide your escape to safety. First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.

The First Alert SMI100 Battery-Operated Smoke Alarm is easy to install and features First Alert's Precision Detection advance sensing technology. The front access battery compartment makes for quick battery replacements and a low battery warning will advise when it's time to replace. Discourage unwanted removal of the battery or smoke alarm using the optional locking features. Use the convenient test/silence button on the front of the smoke alarm to check that it is operating properly and silence false alarms. An end-of-life warning will advise you when it’s time to replace because alarms don't last forever. Effortlessly install the CO400 Battery-Operated Carbon Monoxide Alarm throughout your home for reliable CO protection in minutes. Operation is simple. Test the CO alarm using the single test/silence button. The low battery warning will notify you when it's time to replace the alarm's battery, which is quick process due to the front access battery door, and an end-of-life warning will alert you when it's time to replace the alarm all together.

working good no problems easy installl. Jack. Prescott, MI. Sat Jul 25 2026