A Kidde Wi‑Fi smoke alarm shows a green status light while a smartphone at right displays a red "Kitchen has detected smoke" alert against a plain white background.
Smart

Smart Smoke Alarm, Hardwired with AA Backup Battery

20SAR-W

This smart alarm offers cutting edge technology that sends fast alerts to give your family more time to get out safely. Plus, enhanced sensing technology reduces false alarms often caused by cooking.

    • Real-Time Notifications: Home or away, get mobile alerts of smoke or low battery warnings
    • Advanced Sensing Technology: React quickly with smoke detection that’s over 25% faster✪ and up to 3x more precise.⁂
    • Whole Home Smart Connectivity: Get mobile alerts for every hardwired alarm in your home by adding just one Kidde smart alarm**
    • Reduced Nuisance Alarms: Enhanced sensing technology reduces false alarms often caused by cooking*
    • Hardwired with 2 AA Backup Batteries: Provides power even during short-term outages for extra peace of mind
Helpful Resources

Discover Kidde Smart

Learn more about the features and benefits of this Smart Smoke Alarm — and find out what this device can do for your home.

A white Kidde smart smoke alarm displays a green indicator while a smartphone screen shows a red alert reading "KITCHEN HAS DETECTED SMOKE," set against a black branded background.Play button

Key Benefits

  • Real-Time Notifications in the Kidde App

    Real-Time Notifications in the Kidde App

    Home or away, get notifications of smoke and low battery warnings.

  • Simple Setup with Wi-Fi

    Simple Setup with Wi-Fi

    Connect quickly with 2.4 GHz Wi-Fi and what’s in the box.

  • Whole Home Smart Connectivity

    Whole Home Smart Connectivity

    Get mobile alerts for every hardwired alarm in your home by adding just one Kidde smart alarm.

Product Features

Advanced Sensing Technology

React quickly with smoke detection that's over 25% faster and up to 3x more precise.✪

Whole Home Smart Connectivity

Get mobile alerts for every hardwired alarm in your home by adding just one Kidde smart alarm.

Check in on Your Home and Multiple Locations

Receive notifications for your home - or even grandma's house.

Interconnected Alarms

When one alarm sounds, they all sound, so you never miss an emergency.

North America's #1 Home Fire Safety Brand*

Kidde provides you with the confidence to protect what matters most in your life.

Helpful Resources

Check out this How To Video to learn how to install and set up the Kidde Smart Smoke Alarm.

Download iconProduct Data Sheet
Download iconUser Guide
Download iconCompatibility Guide
Download iconCaring for Alarms
Download iconUnderstanding Kidde Alarms
Download iconETL Certification
Download iconSmoke ETL Certification
Video thumbnailPlay button

Frequently Asked Questions

A red fire extinguisher and three Kidde smoke/CO detectors (one boxed) stand arranged on a light wood tabletop against a pale wall, accompanied by a round "#1" safety-brand badge.

Why Kidde

As North America's #1 home fire safety brand,* Kidde has been working to help make your home the safest it can be for more than 100 years. Now, our latest smoke alarms and combination smoke + carbon monoxide (CO) alarms are bringing you the next level of fire and CO safety. Help protect what matters most in your life with features like cutting edge technology that send fast alerts to give your family more time to get out safely. And enhanced sensing technology that reduces false alarms often caused by cooking.

*Based on total household installations as of December 2023.

✪29% faster average smoke detection based on internal testing of smoldering wood fires for Kidde 9th Edition vs. leading competitor 8th Edition products.

⁂In terms of consistency and range of obscuration rate, based on internal testing for Kidde 9th Edition vs. leading competitor 8th Edition products.

** Different models offer different interconnection options and requirements. Check the User Guide for more info.

* When compared to prior Kidde generations of smoke alarms.