Carbon Monoxide Smoke Detectors

The First Alert Carbon Monoxide Plug-In Alarm with battery backup features an electrochemical CO sensor to alert you to dangerous levels of carbon monoxide. This carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home.

We are very happy with our recent purchase, as well as all of our past purchases. I would highly recommend Wayfair to my friends and family.. Dale. Rochester, MI. Fri Apr 10 2026

Carbon Monoxide (CO) gas is odorless, colorless, and toxic. This is why you need a reliable CO gas detector to keep you safe in your home and office. The American Red Cross® by Eton® Blackout Buddy CO is ETL® certified to UL® 2034 CO standards. If dangerous conditions are detected, the Blackout Buddy CO will blast an audible and LED flashing alarm. - even during a power outage - because it runs on both AC power and replaceable AA batteries! Also, when the power goes out, the Blackout Buddy CO automatically turns on its emergency light so you can use it as an emergency flashlight.

Brenda. Hinesburg, VT. Sun Sep 13 2026

Enhance Your Treasure searching with the Professional Metal Detector for Adults & BeginnersVersatile Detection Modes: Switch effortlessly between All Metal, DISC, Memory, and Jewelry modes for aimed searches, whether you're looking for tokens, gold, jewelry, or general metal objects.High Accuracy & Pinpoint Function: Find hidden finds with confidence using the high-precision pinpoint feature, which enables you to locate objects quickly and accurately, minimizing unnecessary digging.Clear LCD Display: The easy-to-read screen provides real-time information on aim ID, depth, and battery status, ensuring you stay informed throughout your search.IP68 Waterproof Coil: Take your adventures to beaches, riversides, and wet environments—this detector features a waterproof search coil for reliable outdoor use.Ergonomic & Adjustable Design: Enjoy comfortable treasure searching with an adjustable shaft and lightweight, ergonomic construction, appropriate for all heights and extended use without fatigue.Stable Anti-Interference: Advanced technology reduces false signals and ensures stable performance in various terrains, from parks and fields to historic sites.Headphone Compatibility & Backlit Screen: Use the built-in headphone jack for quiet detection and utilize the backlight for easy viewing in low-light conditions.Whether you're a beginner or an experienced enthusiast, this professional metal detector is perfect for uncovering tokens, gold, jewelry, and other valuables. Start exploring and unlock the excitement of discovering hidden finds in your own backyard or beyond!

Love it! It’s been great taking to the beach! I say to use light weight!. Debra. Leesburg, VA. Mon Aug 17 2026

The 2-pack First Alert carbon monoxide alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. The battery-powered design of this personal carbon monoxide detector means your space can be monitored for dangerous carbon monoxide gas. Simply insert the included 9-volt battery and the carbon monoxide detector is ready to go. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it is time to replace the device.

Everyone should order these. Keep yourself and family members safe. Had carbon monoxide in my home and these save lives. Thank you wayfair.. Denise. Floral Park, NY. Wed Jul 15 2026

The First Alert SMI100 Battery-Operated Smoke Alarm is easy to install and features First Alert's Precision Detection advance sensing technology. The front access battery compartment makes for quick battery replacements and a low battery warning will advise when it's time to replace. Discourage unwanted removal of the battery or smoke alarm using the optional locking features. Use the convenient test/silence button on the front of the smoke alarm to check that it is operating properly and silence false alarms. An end-of-life warning will advise you when it’s time to replace because alarms don't last forever. Effortlessly install the CO400 Battery-Operated Carbon Monoxide Alarm throughout your home for reliable CO protection in minutes. Operation is simple. Test the CO alarm using the single test/silence button. The low battery warning will notify you when it's time to replace the alarm's battery, which is quick process due to the front access battery door, and an end-of-life warning will alert you when it's time to replace the alarm all together.

working good no problems easy installl. Jack. Prescott, MI. Sat Jul 25 2026

Be alerted to dangerous carbon monoxide leaks with the First Alert® CO410 Battery-Operated Carbon Monoxide Alarm with Backlit Digital Display. This carbon monoxide detector uses an electrochemical carbon monoxide sensor. An easy-to-read digital display allows for a quick view of current and peak carbon monoxide levels. This unit is powered by 2 AA batteries. It offers peace of mind even during power outages.

Supports leak detection for EVAP lines, vacuum hoses, intake passages, turbo piping, and exhaust systems. Suitable for cars, trucks, boats, motorcycles, and ATVs.

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. This carbon monoxide detector is battery operated, making it portable and easy to use, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat.

The SMCO200V Battery-Operated 2-in-1 Smoke Alarm & Carbon Monoxide Alarm provides reliable protection against both threats. Alarm features voice and location alerts and meets the latest industry standards. First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.

The First Alert® SMCO100 Battery-Operated 2-in1 Combination Smoke and Carbon Monoxide Alarm provides protection against both threats in a single alarm. Installation of the battery-operated detector is simple - no wiring is required. Add fire and CO protection throughout your home in minutes and help prevent unwanted removal of the battery or alarm using the optional locking features. Easily test the battery-operated combination detector using the single test/silence button to help ensure it is operating properly and silence false alarms. A low-battery warning will tell you when to replace the alarm battery. Detectors themselves should be replaced at least every 10 years. The end-of-life warning will help notify you when it's time to replace. See user's manual for information on how and when to test and replace detectors.

The product alerts you to dangerous carbon monoxide levels. This carbon monoxide detector operates on a dual-power system with battery backup for continuous monitoring, even in the event of a power outage. The backlit digital screen tells you, at a glance, what the carbon monoxide and power levels are. The monitor also features a convenient test and silence button and an end-of-life timer that lets you know when it is time to replace the unit.

Thankfully, I have not had it go off due to us not having carbon monoxide in the home, but we test it every week and it’s loud!!!. Diane. Terryville, CT. Wed Jan 01 2020

This First Alert carbon monoxide alarm features a 10-year built-in lithium battery for continuous monitoring during the life of the alarm, and uses an electrochemical carbon monoxide sensor and an 85-decibel alarm to alert you to CO threats. The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. Because CO evenly distributes itself, it's important to have a CO detector on every level and in every bedroom of your home. This easy-to-use alarm features a digital display that shows ambient temperature as well as peak CO levels. The detector's stylish design looks great on top of a dresser or table.

Love the product… Easy to setup…Test Alarm feature is also very helpful.. Vamsi. US. Mon May 15 2023

The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup utilizes First Alert's Precision Detection technology and meets the latest industry standards. Easily install and interconnect multiple detectors together to create an alarm system throughout your home. First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.

Anthony. Eatontown, NJ. Sat Mar 21 2026

The First Alert® SMCO210 Sealed 10-Year-Battery Combo Smoke and CO Alarm with Slim Profile Design uses our Precision Detection advanced sensing technology to meet the latest industry standards. This 2-in-1 alarm provides convenient protection against both fire and carbon monoxide (CO). The slim-profile combination alarm is half the depth of a standard alarm. It is sleek and compact to help the detector blend seamlessly with most home décor. And the 10-year lithium battery means no battery replacements for a decade – the end-of-life warning lets you know when it is time to replace the alarm. No more low-battery chirps and multiple battery replacements!

The First Alert Plug-In Electrochemical Carbon Monoxide Alarm alerts you to dangerous carbon monoxide. This carbon monoxide detector operates on a dual-power system with battery backup for continuous monitoring, even in the event of a power outage. The backlit digital screen tells you at a glance what the carbon monoxide and power levels are. The CO monitor also features a convenient test and silence button and an end-of-life timer that lets you know when it is time to replace the unit.

Like it reads—plug it in. Located it outside my furnace room.. Sydney. California, MD. Sun Jun 30 2024

The fire safety you trust is now connected and compatible. Add smart fire safety alerts to your home with the First Alert SC5 Battery Smart Smoke and Carbon Monoxide (CO) Alarm. This 2-in-1 device elevates your home's fire and CO safety whether home or away. Seamlessly integrate the SC5 Battery-Operated Smart Smoke and CO alarm into your home's safety ecosystem if you need to add detection or if it is time to replace. Interconnect when installing so when one alarm sounds, all compatible alarms sound throughout the home to help provide an early warning. This smart 2-in-1 battery-operated alarm offers advanced features and the latest smoke alarm technology. The alarm will sound voice alerts with Heads-Up warning in the event of a fire or CO emergency. Alerts will tell you the type and location of danger in the home to help you escape. The alarm will also send mobile alerts through the First Alert app to keep you informed whether home or away.The SC5 Battery Smart Smoke and CO detector is easy to install and maintain to help ensure your home and family are protected. Test alarms are working properly using the app or the alarm's single test/silence button. The SC5 alarm also provides in-app and audible notices when the alarm needs to be replaced or when the batteries are running low to help eliminate late-night chirps.

I’m a big believer of the First Alert security system and smart smoke and carbon monoxide alarm. It was time to replace my nest protect units and these works with my smart home system.. Jude Narcisse. Pearland, Texas. Wed Aug 26 2026

The fire safety you trust is now connected and compatible. Add smart fire safety alerts to your home with the First Alert SC5 Battery Smart Smoke and Carbon Monoxide (CO) Alarm. This 2-in-1 device elevates your home's fire and CO safety whether home or away. Seamlessly integrate the SC5 Battery-Operated Smart Smoke and CO alarm into your home's safety ecosystem if you need to add detection or if it is time to replace. Interconnect when installing so when one alarm sounds, all compatible alarms sound throughout the home to help provide an early warning. This smart 2-in-1 battery-operated alarm offers advanced features and the latest smoke alarm technology. The alarm will sound voice alerts with Heads-Up warning in the event of a fire or CO emergency. Alerts will tell you the type and location of danger in the home to help you escape. The alarm will also send mobile alerts through the First Alert app to keep you informed whether home or away.The SC5 Battery Smart Smoke and CO detector is easy to install and maintain to help ensure your home and family are protected. Test alarms are working properly using the app or the alarm's single test/silence button. The SC5 alarm also provides in-app and audible notices when the alarm needs to be replaced or when the batteries are running low to help eliminate late-night chirps.

This First Alert Plug-In Electrochemical Carbon Monoxide Alarm features an electrochemical CO sensor to alert you to dangerous carbon monoxide. This personal carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home, office, or other space. The simple, user-friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage.

Received as advertised. Simple to install- just plugged in. One day shipping delay due to winter storm. Was informed about delay and provided new date, as when to expect delivery - without asking. This unit only takes up one outlet plug on a regular size two plug home outlet. There is room to plug in a 2nd male end plug, in to same outlet. Such as a night light.. Anonymous. Thu Feb 08 2024

This portable carbon monoxide meter combines high accuracy and user-friendly design, featuring a large LCD display and durable ABS construction. It continuously monitors CO levels and sounds an audible alarm when concentrations reach dangerous levels. With a wide measuring range, fast response time, and energy-efficient operation, it is suitable for various industrial and commercial environments.

Carbon Monoxide DetectorStay Alert, Stay Safe – Carbon Monoxide Detector On Duty：Experience unmatched precision and safety with Carbon Monoxide Detector. The high-sensitivity electrochemical sensor, 0-1000PPM wide detection range, and visual & audible alarm make it your reliable guardian against CO threats. Stay protected, stay secure, and breathe easy with confidence.

Anonymous. Sun Apr 27 2025

Just received, looking to where we can place in home. I bought because someone I work with took kids to one of those clinics. Headache, nausea not feeling well. Turned out to be Carbon Monoxide whole family impacted the youngest was the worst. Their heating system. These are well priced Last awhile also. Have more coming for the rest of us. We all got heating inspected.. Linda. Burkburnett, TX. Sun Jan 09 2022

This uses electro-chemical sensors and can react to ambient changes in carbon monoxide quickly. It's an ideal tool for measuring CO levels in industrial environments, commercial buildings, or residential dwellings. Measures CO levels from 0 to 1000 PPM. Max hold and data hold functions. A built-in alarm sounds when CO concentration hits 200 PPM or higher. Auto power off keeps the included 9V battery charged as long as possible.

Keep your home and RV safer with this portable natural gas leak detector, designed to help you find combustible gas leaks quickly and easily. Using a gas sensitive semiconductor sensor, it detects common fuels such as natural gas, propane, methane, butane and LPG, making it ideal for checking around kitchen ranges, furnaces, fireplaces and water heaters. The clear LCD bar graph and loud alarm signal rising gas levels at a glance and by sound, while the slim PVC body and pocket clip keep it close at hand as you move from room to room. With fast warm up, quick response and simple sensitivity selection, this compact tool fits comfortably into your regular home maintenance routine, offering added confidence when using gas appliances.

Carbon Monoxide DetectorStay Alert, Stay Safe – Carbon Monoxide Detector On Duty:Experience unmatched precision and safety with Carbon Monoxide Detector. The high-sensitivity electrochemical sensor, 0-1000PPM wide detection range, and visual & audible alarm make it your reliable guardian against CO threats. Stay protected, stay secure, and breathe easy with confidence.

This First Alert Battery Electrochemical Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor that lasts for up to five years to detect carbon monoxide. This carbon monoxide detector is battery powered, making it portable and easy to use anywhere, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat.

I like having one because carbon monoxide is something one does not smell.. Felicia S.. US. Fri Sep 13 2024

The product utilizes an electrochemical carbon monoxide sensor that lasts for up to 5 years to detect carbon monoxide. This carbon monoxide detector is battery powered, making it portable and easy to use anywhere. When carbon monoxide levels become elevated, a loud 85dB alarm alerts you to the threat.

I installed the battery, which was very easy and installed it on my wall.. Lillian. Bayonne, NJ. Sat Nov 14 2020