Availability: In Stock
Price: $54.95 $64.95
You Save: $10.00 (15% Off)
  • Complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install detector
  • 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
  • End-of-life warning lets you know when it's time to replace the alarm
  • Slim profile design is half the depth of a standard alarm
  • Test/silence button for efficient testing to ensure detector is working properly

10-Year Battery 2-in-1 Smoke & CO Alarm with Slim Profile Design

The First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO Alarm with Slim Profile Design uses First Alert's Precision Detection. This advanced sensing technology meets new industry standards. This 2-in-1 alarm provides convenient protection against both fire and carbon monoxide (CO). The combination detector is also equipped with a 10-year sealed battery to eliminate the need for battery replacements and low battery chirps.

Reliable 2-in-1 Protection

Easily install the SMCO210 10-Year Battery Combo Smoke and CO Alarm for reliable 2-in-1 protection against both threats in a single alarm. With no wiring required, simply mount the detector on a wall or ceiling throughout your home to help be alerted to a carbon monoxide or fire emergency.

10-Years of Uninterrupted Protection

The Combination Smoke and CO Alarm's built-in 10-year sealed battery provides continuous power for the life of the alarm. This means that there is no need to worry about battery replacements. This also eliminates low battery chirps for the life of the detector, plus the cost and hassle of changing the batteries.

Slim Profile Design

The slim profile combination alarm is half the depth of a standard alarm and is equipped with superior features. The low-profile design is sleek and compact to help the detector blend seamlessly with most home decor.

Efficient Testing Feature

Test the 10-year battery combo smoke and CO alarm using the single test/silence button on the front of the alarm. This will help ensure it is functioning correctly and silence false alarms. The end-of-life warning will help alert you when it’s time to replace the detector because alarms don't last forever. Please see user's manual for information on how and when to test and replace alarms.

Precision Detection Advanced Sensing Technology

First Alert's Precision Detection Advanced Sensing Technology meets the latest safety standards set by UL 217 8th Edition. This means this combination alarm is better at distinguishing between harmless cooking smoke and real fires. Additionally, 8th edition combination alarms can detect smoke from burning synthetic materials, which are common in modern homes. This translates to fewer bothersome false alarms and a crucial early warning in case of a fire emergency.

First Alert 2-in-1 Smoke & CO Alarm with Slim Profile SMCO210

Recommended replacement for the following model:


What is the UL 217 8th Edition Smoke Alarm Update?

UL Solutions has updated its smoke alarm standards requiring smoke alarm manufacturers to meet new requirements by June 30th, 2024, to reduce nuisance alarms and detect smoke from synthetic materials. This update is known as UL 217 8th Edition and helps to improve fire protection for modern homes. As a leader and the most trusted brand in fire safety*, First Alert has introduced Precision Detection advanced sensing technology to meet new UL 217 8th Edition industry standards. First Alert Precision Detection Smoke Detectors and Combination Smoke and Carbon Monoxide Alarms are available for online purchase at the First Alert Store.

*First Alert Brand Trust Survey, March 2023 – Results are based on the responses of 1,043 adult homeowners, ages 25 and older, living in the United States who completed an online survey asking them to choose from six brands in the smoke, fire and carbon monoxide protection space.

Why Should I Use First Alert Precision Detection?
Our new advanced sensing technology complies with UL 217 8th Edition smoke alarm standards to reduce cooking nuisance alarms and provide an early warning in the event of a home fire emergency. Current smoke alarms will continue to provide protection until they reach their end of life. However, when it’s time to replace the smoke alarms in your home or you want to upgrade to the latest technology, look for Precision Detection to help identify compliant First Alert alarms. Smoke alarms should be replaced at least every 10 years.
Why Should I Install 8th Edition Smoke Alarms?
In a home fire emergency, every second counts. Modern homes tend to be built and furnished with lighter, synthetic materials that burn hotter and faster. These homes also may feature layouts with higher ceilings and open floor plans. This may result in less time for a safe evacuation if a fire breaks out. Escape times have reduced from 10-15 minutes in the 1970’s to 1-2 minutes today (NFPA). 8th edition smoke alarms are better at detecting fires in homes built and furnished with modern construction materials where fires can spread at a faster pace. Install 8th edition smoke alarms and create an escape plan with your family to help be prepared.
What is the #1 Reason Why Smoke Alarms Are Disabled?
The #1 reason why people disable smoke alarms in their home is due to nuisance alarms caused by cooking or steam leaving them unprotected (NFPA). Almost 3 of every 5 home fire deaths result from fires with no smoke alarms or no working smoke alarms (NFPA) so it is important to install and maintain your home’s alarms. Installing 8th edition alarms equipped with Precision Detection and following proper placement of at least 15 ft. away from cooking appliances will help reduce nuisance alarms.
Why Is My Smoke Alarm Beeping?

Smoke alarms can beep for to the following reasons:

  • Low Battery: This is the most common cause. Most smoke detectors use a chirping sound (usually a single beep every 30-60 seconds) to warn you that the batteries are running low and need to be replaced. Don't wait until the alarm is silent - replace the batteries right away to ensure your smoke alarm continues to function properly.
  • End of Life: Smoke alarms don't last forever. If your smoke detector is beeping constantly or in a different pattern than the low battery chirp, it may be nearing the end of its intended lifespan and should be replaced altogether.
Product Details
Product Specs
Combo Smoke & Carbon Monoxide Alarms
Product Manuals

If you are interested in ordering a large quantity of items you may qualify for volume pricing discounts. Volume Discount Pricing is a great way for customers to save big on large, bulk orders of most items available in our store. Please send a bulk order request to our friendly sales staff so they may create a quote and provide personal service for your order! You will receive a response within 1-2 business days and our office hours are Monday through Friday, 8am-5pm CST.

We make it as easy as possible to ensure you get the lowest prices available:
  • Let us know what products & the quantities you are interested in.
  • Get a detailed quote from a dedicated sales rep.
  • Our warehouse ships directly to you.
  • You enjoy the savings & are now a preferred customer.
Send A Request Now
Direct From Warehouse Pricing bulk purchase, wholesale pricing

Customer Reviews

This item does not have any reviews yet.
0 $0.00