A round Kidde smoke-and-carbon-monoxide alarm displays a green indicator light while mounted; ventilation slots and red/black wires are visible against a black background.
DETECT

Combo Smoke + CO Alarm, Hardwired with AA Backup Battery

30CUAR

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

  • Hardwired Alarm with 2 AA Replaceable Batteries - Provides power even during short-term power outages for extra peace of mind. Change replaceable batteries every 6 months, or when you hear the low battery chirp.

  • Double the Detection- Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective device.

  • Interconnected AlarmsΔ- When one alarm sounds, they all sound, so you never miss an emergency and can get out faster.

Helpful Resources

Detection Type

Power Source

10-Year BatteryAA Battery

Backup battery options

10-Year Battery

Additional Options

Voice Alerts

Discover Detect

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

A round Kidde smoke-and-carbon-monoxide alarm mounted on a pale wall, showing a green LED; large "Kidde Detect Smoke + CO Alarm" branding sits to the left on a minimalist background.Play button

Key Benefits

  • Interconnected Alarms

    Interconnected AlarmsΔ

    When one alarm sounds, they all sound, so you never miss an emergency and can get out faster.

  • Reduced Nuisance Alarms

    Reduced Nuisance Alarms

    Reduces false alarms often caused by cooking.

  • Self-Testing

    Self-Testing

    Internal components ensure alarm is always operating as expected.*

Product Features

Interconnect Capability

Alarm uses hardwiring to connect with other Kidde alarms, when one goes off they all do.

Notifications

Alarm will beep and blink red when smoke or carbon monoxide is detected.

Where to Place Devices

This simple guide helps ensure your home is fully protected.

State Requirements

Check to see the CO alarm and smoke alarm laws in your state.

Comprehensive Solutions

Protect your home with the help of our full range of home and fire safety products.

Helpful Resources

See how easy installation is with the included twist-and-click mounting bracket.

Download iconProduct Data Sheet
Download iconUser Guide EN
Download iconUser Guide SP
Download iconCertification
Download iconSafety Data Sheet
Thumbnail of the How To video.Play button
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DETECT Products

Kidde DETECT alarms are comprehensively tested and designed to the latest UL standard for safety and reliability. Plus, cutting edge technology sends fast alerts that give your family more time to get out safely. And enhanced sensing technology reduces false alarms often caused by cooking.

LEARN MORE
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.

ΔDifferent models offer different interconnection options and requirements. See User Guide for more info

Detection Type
Power Source
Cutting Edge Technology
Self-Testing
Never Change Battery
Interconnected Alarms
Voice Alerts
UL Listed
10-Year Warranty
Pair of white Kidde smoke and carbon monoxide detectors overlap, showing vents, test buttons and a green status LED against white retail packaging labeled "Smoke + Carbon Monoxide."
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Kidde smoke-and-carbon-monoxide alarms are arranged overlapping in the foreground against white-and-purple retail packaging labeled "Detect," featuring the brand logo and a voice-alert icon.Combo Smoke + CO Alarm, Hardwired with AA Backup Battery and Voice Alerts
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Kidde smoke-and-carbon-monoxide alarms sit overlapping, showing test/power buttons and vents; packaging text reads "detect smoke + carbon monoxide" with a purple banner and interconnected-alarms icon.Combo Smoke + CO Alarm, Hardwired with 10-Year Backup Battery
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A pair of white Kidde smoke-and-carbon-monoxide detectors sit overlapping on product packaging, surrounded by purple branding, logo text and icons indicating voice alerts and a 10-year lifespan.Combo Smoke + CO Alarm, Hardwired with 10-Year Backup Battery and Voice Alerts
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Smoke alarms: two white round Kidde units overlap and face forward, displayed on product packaging with a red header, brand logo and prominent "Detect Smoke" label.Smoke Alarm, Hardwired with AA Backup Battery
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Smoke alarms are arranged overlapping on product packaging, displaying Kidde branding and a red "interconnected alarms" badge against a white background.Smoke Alarm, Hardwired with 10-Year Backup Battery
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Kidde smoke alarms sit overlapping, shown front-facing; package header reads "KIDDE" and "DETECT SMOKE" with a red banner noting "10‑year" battery and a "voice alerts" icon.Smoke Alarm, Hardwired with 10-Year Backup Battery
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