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FIRST ALERT

Battery Operated Smoke Alarm DC Ion

Mfg.#
1046827
Sku#
3509395
  • 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

* Estimated stock levels as of Tue, Mar 17, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

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.

Specifications

General

Battery 9V
Battery Included Yes
Sensor Type Ionization
Sound Level 85dB at 10 feet
Type Smoke Alarm

Dimensions

Height 1.9 in
Length 5.4 in
Width 5.4 in

Manufacturing Details
The following information is subject to change without notice

Shop USA No

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