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Smoke Alarms

(28 products)
Help protect your home by investing in a smoke detector and fire alarm. First Alert offers a variety of smoke detectors with unique features and power sources.

Install on every level, every bedroom

Smoke alarms help provide early warning in the event of a home fire emergency. Available in 10-year sealed battery, battery and hardwire power sources, First Alert smoke alarms are also equipped with features such as interconnect, voice and location alerts, escape light and more to meet your home and family’s needs.



First Alert Smoke Detectors

Smoke detectors help provide an early warning in the event of a fire emergency and First Alert fire alarms offer a variety of features to deliver advanced and reliable fire detection to help protect what matters most.

  • 10-Year Sealed Battery Smoke Detectors

    10-year sealed battery alarms eliminate the need for battery replacements and late-night low battery chirps for the life of the device.

  • Hardwire Smoke Detectors

    Most hardwire detectors include a hardwire connecter plug that makes installation easy. For coverage during power outages, we offer a back-up battery feature to provide continuous detection.

  • Battery-Operated Smoke Alarms

    Battery-operated detectors are easy to install throughout your home where needed and are simple to maintain.

  • Combination Smoke and Carbon Monoxide Alarms

    Combination smoke and carbon monoxide (CO) detectors provide 2-in-1 detection against both fire and CO in one, convenient device.

FAQs

How many smoke alarms do I need?

Install smoke alarms on every level of your home, including the basement, plus one in each bedroom and outside all sleeping areas. A two-story home with three bedrooms typically needs at least five alarms. Large homes may require more based on layout and code requirements.

How do I choose a smoke alarm?

Choose a smoke alarm based on where it will be installed and the features you need. Options include hardwired or battery-operated models depending on your home’s installation method, 10-year sealed batteries, voice alerts, and combination smoke and carbon monoxide detectors. For large spaces, consider interconnected alarms for whole home alerts.

Can I use different types of smoke alarms together in my home?

Yes, different types of smoke alarms can be used together in a home, but compatibility depends on several factors:

  • Sensor types: Using a mix of photoelectric and ionization alarms — or dual sensor units — is recommended for broader fire detection coverage.
  • Features: Smoke-only and combination smoke & CO alarms can be used together throughout the home, based on room placement and safety needs.
  • Power sources: Battery-operated and hardwired alarms can coexist in the same home, but they won’t function as a connected system unless specifically set up and designed to do so.
  • Interconnect compatibility: For interconnected systems, alarms must be compatible — ideally from the same brand and series — to ensure they communicate properly. Mixing alarms from different manufacturers may prevent alarms from triggering together, even if the wiring is the same. See product manual for compatible models.

How often should I test my smoke alarm?

You should test your smoke alarm regularly to help make sure it’s working properly. If your alarm does not test correctly, replace the unit immediately. See the product manual for specific information on how and when to test your alarms.

What is the lifespan of a First Alert smoke alarm?

First Alert smoke alarms should be replaced at least every 10 years. Check the manufacturer date on the back of the alarm and if it is 10 years old or older - the entire unit should be replaced—even if it still seems to work—as the smoke sensors can lose sensitivity over time.

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