First Alert - Wireless Interconnect Talking Battery Operated Smoke and Carbon Monoxide Alarm - White

  • Model: SCO501CN-3ST
  • SKU: 5578350
Know where a fire is immediately with the First Alert OneLink alarm. The talking alarm tells you whether smoke or carbon monoxide is detected, and the photoelectric smoke sensor reduces nuisance alarms, so normal smoke or steam from cooking doesn't set it off. The First Alert OneLink alarm has an easy-to-use mute button.
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What's Included

  • First Alert Wireless Interconnect Talking Battery Operated Smoke and Carbon Monoxide Alarm
  • 2 x AA Batteries
  • Owner's manual

Ratings & Reviews

Overall Customer Rating:
100% of customers would recommend this product to a friend (1 out of 1)


Protect your loved ones and your home

Detects levels of smoke and carbon monoxide within your home and tests itself automatically.

ONELINK® wireless technology

Wirelessly connect up to 16 First Alert Wireless Interconnect alarms in your home.

50 feet communication range

Between any two ONELINK® Alarms is typically inside of a home.

Carbon monoxide detector

Protection from smoke and fire.

Electrochemical sensor

Most accurate technology available for detecting carbon monoxide.

Photoelectric smoke sensing

Optimal protection from smoldering fires.

Loud 85-decibel alarm

Offers a loud pulsing alarm that will sound to alert you to a potential problem.

Talking alarm

Tells you type and location of danger.


Possibility of placing anywhere.

Easy access battery door

Fast battery replacement.

End of life timer

This device will notify you when the sensors are faulty.

Overall customer rating

would recommend to a friend
  • Rating: 5 out of 5 stars

    Great smoke/carbon monoxide detectors

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    Purchased 2 for children's bedrooms when they on sale, works as described and easy installation process. I like the link feature. Detectors have high reviews from Consumer Report.

    I would recommend this to a friend

Product images, including color, may differ from actual product appearance.