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Please note, in-stock items will be ready for pick up within 4 hours; however, if an item needs to be special ordered it could take up to 1 week to become available.

First Alert SMI100 Battery-Operated Smoke Alarm

First Alert

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

  • 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
  • Battery-operated detector allows for easy installation and maintenance
  • Front access battery compartment makes for easy battery replacements
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Test/silence button for efficient testing to ensure detector is working properly