Hero image 0 of Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup KN-COB-DP2, 0 of 4
Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup KN-COB-DP2
Key item features
- Advanced Sensing: Electrochemical sensing technology detects invisible carbon monoxide gas.
- Power Failure Protection: Includes 2-AA batteries for backup during power outages.
- Loud Alarm: 85 decibel alarm alerts you to the presence of carbon monoxide.
- Easy Installation: Plugs into any standard AC wall outlet and allows use of the upper outlet.
- Whole Home Safety: Recommended to place one detector on each level and in each bedroom.
- End of Life Notification: Alerts you when the detector needs replacement after 10 years.
- Operational Indicators: Features red LED for alarm mode and green LED for normal operation.
- Certified and Warrantied: UL Certified with a 10-year limited warranty.
Generated by AI
Specs
- Has nrtl listing certificationN
- Smoke & carbon monoxide alarm sensor technologyElectrochemical Sensor
- Power typeBattery
- Battery life10 years
- Decibel rating85 dB
- Rec locationIndoor
Reviews summary
Pros
- : Offers affordable cost for its functionality.
- : Simple plug-in installation process.
Generated by AI
Current price is USD$27.47
Price when purchased online
Out of stock
How do you want your item?
Out of stock
Similar items you might like
Based on what customers bought
Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3 $42.94
3 optionsAvailable in additional 3 options$4294current price $42.94Options from $42.94 – $128.82Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3
1914.6 out of 5 Stars. 191 reviewsSave with
Shipping, arrives tomorrowKnox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup $51.00
3 optionsAvailable in additional 3 options$5100current price $51.00Options from $51.00 – $153.00Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
1774 out of 5 Stars. 177 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowIn 100+ people's carts (2 pack) Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators $44.93
In 100+ people's carts
$4493current price $44.93More options from $27.47(2 pack) Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators
13294.7 out of 5 Stars. 1329 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowIn 50+ people's carts (2 pack) Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM $50.28
In 50+ people's carts
$5028current price $50.28More options from $27.94(2 pack) Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM
4384.6 out of 5 Stars. 438 reviewsSave withShipping, arrives tomorrowKnox Safety Battery Operated Carbon Monoxide Detector, Voice Alert & Display, 10-Year Lithium Power $41.97
2 optionsAvailable in additional 2 options$4197current price $41.97Options from $41.97 – $75.00Knox Safety Battery Operated Carbon Monoxide Detector, Voice Alert & Display, 10-Year Lithium Power
3944.1 out of 5 Stars. 394 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrow100+ bought since yesterday Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3 $23.44
100+ bought since yesterday
$2344current price $23.44Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3
2794.6 out of 5 Stars. 279 reviewsSave withShipping, arrives tomorrowKidde Battery-Powered Electrochemical Carbon Monoxide Detector $44.44
2 optionsAvailable in additional 2 options$4444current price $44.44Options from $44.44 – $88.88Kidde Battery-Powered Electrochemical Carbon Monoxide Detector
354.4 out of 5 Stars. 35 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowOutdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen $28.96
$2896current price $28.96Outdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen
674.4 out of 5 Stars. 67 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowKidde C3010D Carbon Monoxide Detector with Digital Display and 10-Year Worry-Free Lithium Battery, KIDDE $49.94
2 optionsAvailable in additional 2 options$4994current price $49.94Options from $49.94 – $99.88Kidde C3010D Carbon Monoxide Detector with Digital Display and 10-Year Worry-Free Lithium Battery, KIDDE
564.5 out of 5 Stars. 56 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrow
About this item
Product details
The Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup and LED Light Indicators, model 900-0263, provides easy installation and peace of mind. The carbon monoxide alarm plugs directly into any standard AC wall outlet and two AA batteries provide reliable detection of carbon monoxide during power outages. The carbon monoxide detector allows you to still use plugs above the wall outlet, as long as it's plugged into the bottom outlet. In the event of an incident of carbon monoxide gas, the Kidde alarm will sound an 85-decibel alarm with 4 loud beeps, plus a red LED light will illuminate. The Kidde CO detector also features a Replacement Alert, which chirps 2 times every 30 seconds to indicate that it's time to replace the detector. For whole home family protection, place one carbon monoxide detector on each level of your home and in or outside each bedroom. UL Certified with a 10-year limited warranty. Meets requirements of UL 2034.
Kidde Carbon Monoxide Alarm 900-0263:
- Electrochemical sensing technology - plug-in carbon monoxide alarm detects invisible carbon monoxide gas
- Protects during a power failure: 2-AA batteries (included) provide backup in the event of a power outage
- 85 decibel alarm alerts of carbon monoxide
- Easy to install & use: AC powered by your standard wall outlet
- Place 1 carbon monoxide detector on each level of your home & in each bedroom to help protect from poisonous CO gas
- End of life notification warns of replacement need after 10 years
- Test & reset button ensures of proper operation
- Two LED's: red for alarm mode and green for normal operation
- UL Certified, 10-year limited warranty
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Brand
Kidde
Has nrtl listing certification
N
Smoke & carbon monoxide alarm sensor technology
Electrochemical Sensor
Power type
Battery
Directions
Instructions
Information Not Available
Warranty
Warranty information
10 Year
Warranty url
Warnings
Ingestion Hazard
This product contains a battery. Death or serious injury can occur if ingested. A swallowed battery can cause Internal Chemical Burn in as little as 2 hours. Keep new and used batteries OUT OF REACH OF CHILDREN. Seek Immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
More items to consider
Based on what customers bought
Best seller Prepared Hero Emergency Fire Blanket - 4 Pack - Fiberglass Fire Blanket for Home & Kitchen, 40”x40” $59.96
Best seller
5 optionsAvailable in additional 5 options$5996current price $59.96More options from $25.99Prepared Hero Emergency Fire Blanket - 4 Pack - Fiberglass Fire Blanket for Home & Kitchen, 40”x40”
38494.7 out of 5 Stars. 3849 reviewsSave withShipping, arrives tomorrow500+ bought since yesterday Original WD-40 Formula, Multi-Purpose Lubricant Spray Smart Straw, 8 oz, Machine & Tool Lubricant $6.32
500+ bought since yesterday
5 optionsAvailable in additional 5 optionsSponsored$632current price $6.32Options from $6.32 – $151.68Original WD-40 Formula, Multi-Purpose Lubricant Spray Smart Straw, 8 oz, Machine & Tool Lubricant
43334.7 out of 5 Stars. 4333 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowRayovac High Energy 9V Batteries (2 Pack), Alkaline 9 Volt Batteries $6.97 Was $14.56
3 optionsAvailable in additional 3 optionsNow$697current price Now $6.97, Was $14.56$14.56Options from $6.97 – $23.09Rayovac High Energy 9V Batteries (2 Pack), Alkaline 9 Volt Batteries
15634.6 out of 5 Stars. 1563 reviewsSave withShipping, arrives tomorrow100+ bought since yesterday AAF Flanders 4-Pack 16" x 20" x 1" Nested Fiberglass MERV 1 Air Filter $7.48 Was $15.07
100+ bought since yesterday
19 optionsAvailable in additional 19 optionsNow$748current price Now $7.48, Was $15.07$15.07Options from $7.48 – $14.96AAF Flanders 4-Pack 16" x 20" x 1" Nested Fiberglass MERV 1 Air Filter
124114.5 out of 5 Stars. 12411 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowVictor Metal Pedal Mouse Trap - 4 COUNT $7.97
2 optionsAvailable in additional 2 options$797current price $7.97Victor Metal Pedal Mouse Trap - 4 COUNT
10504.1 out of 5 Stars. 1050 reviewsShipping, arrives in 3+ days500+ bought since yesterday Alliance Rubber Advantage Rubber Bands, Size 54 (Assorted Sizes), 2 oz Bag, Red, Yellow, Blue, 2654A $1.18
500+ bought since yesterday
2 optionsAvailable in additional 2 options$118current price $1.18Options from $1.18 – $4.72Alliance Rubber Advantage Rubber Bands, Size 54 (Assorted Sizes), 2 oz Bag, Red, Yellow, Blue, 2654A
49914.7 out of 5 Stars. 4991 reviewsSave withPickup todayDelivery today500+ bought since yesterday Filtrete 20x25x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64
500+ bought since yesterday
$564current price $5.64Filtrete 20x25x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
17634.6 out of 5 Stars. 1763 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowBest seller ACDelco AA Super Alkaline Batteries, 1.5 Volts, 24-Count $9.24
Best seller
4 optionsAvailable in additional 4 options$924current price $9.24Options from $9.24 – $14.08ACDelco AA Super Alkaline Batteries, 1.5 Volts, 24-Count
20214.6 out of 5 Stars. 2021 reviewsSave withShipping, arrives tomorrowBest seller Expert Gardener Sun & Shade Northern Grass Seed Mix, for Sun to Partial Shade, 3 lb. $11.44
Best seller
4 optionsAvailable in additional 4 options$1144current price $11.44Options from $11.44 – $49.44Expert Gardener Sun & Shade Northern Grass Seed Mix, for Sun to Partial Shade, 3 lb.
12324.3 out of 5 Stars. 1232 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowBest seller Energizer MAX 9V Batteries (2 Pack), 9 Volt Alkaline Batteries $6.92
Best seller
3 optionsAvailable in additional 3 options$692current price $6.92More options from $4.96Energizer MAX 9V Batteries (2 Pack), 9 Volt Alkaline Batteries
14774.8 out of 5 Stars. 1477 reviewsSave withShipping, arrives tomorrowBest seller Plastic Disposable Forks, Electric Blue, 24 Pieces, by Way To Celebrate $1.00
Best seller
$100current price $1.00Options from $1.00 – $6.00Plastic Disposable Forks, Electric Blue, 24 Pieces, by Way To Celebrate
27904.7 out of 5 Stars. 2790 reviewsSave withPickup todayDelivery todayBest seller Pen+Gear Letter Size 3-Prong Paper Folder, Green $0.54
Best seller
$054current price $0.54More options from $0.38Pen+Gear Letter Size 3-Prong Paper Folder, Green
72404.6 out of 5 Stars. 7240 reviewsSave withPickup todayDelivery today
Customer ratings & reviews
How item rating is calculated
Reviews summary
Pros
- : Offers affordable cost for its functionality.
- : Simple plug-in installation process.
Generated by AI
Customer images
Sort by |
Showing 1-3 of 153 reviews
Aug 15, 2016
ColoradoChris
5 out of 5 stars review
Verified Purchase
Excellent product and easy to install
Don't know why a product like this wasn't available the first time I bought CO detectors years ago, but it makes sense that they could be plugged in to an existing electrical outlet and have a back-up battery in case the power goes out. The only thing that I think would improve such a product is if it had a ten-year sealed lithium back-up battery installed in it. But, since they are plugged in so low to the floor, replacing the batteries is not much of an inconvenience. This is a definite improvement over the battery-only kind of unit. I think this new unit provides increased peace of mind.
Helpful?16X7YFK2Y0Q039360952
Jan 25, 2017
cb411
5 out of 5 stars review
Verified Purchase
The importance of carbon monoxide alarms
We all know how important smoke detectors are in our homes. But carbon monoxide alarms are just as important. One thing that makes carbon monoxide poisoning so dangerous is that it is a deadly odorless, colorless gas. This alarm was basically just "plug and play". You just plug it in and it works, testing for carbon monoxide immediately. It has a small green light that lets you know that it is working and that no carbon dioxide has been detected.
Helpful?16X7YFK2Y0Q039360952
Apr 27, 2025
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review
Verified Purchase
I ordered a bolt quantity, for my renters, and Walmart was the only place that could accommodate the amount that I needed and get it shipped in a timely fashion with a decent price!
Incentivized Review
Helpful?16X7YFK2Y0Q039360952
Popular items in this category
Best selling items that customers love
In 50+ people's carts (2 pack) Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch $96.00
In 50+ people's carts
$9600current price $96.00More options from $65.00(2 pack) Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
2084.4 out of 5 Stars. 208 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowKidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery Backup $53.00
$5300current price $53.00Kidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery Backup
713.5 out of 5 Stars. 71 reviewsSave withShipping, arrives in 3+ daysKidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts $53.00
$5300current price $53.00Kidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts
753.5 out of 5 Stars. 75 reviewsSave withShipping, arrives tomorrowKidde 10 Year Smoke Alarm and Carbon Monoxide Value Pack, Models i1040 and KN-COB-LP2 $38.47
$3847current price $38.47Kidde 10 Year Smoke Alarm and Carbon Monoxide Value Pack, Models i1040 and KN-COB-LP2
754.6 out of 5 Stars. 75 reviewsSave withShipping, arrives tomorrowFirst Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup $82.99
$8299current price $82.99First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup
3214.6 out of 5 Stars. 321 reviewsShipping, arrives in 3+ daysKidde AA Alkaline Batteries, for Smoke and Carbon Monoxide Detectors, 4 pack $6.97
$697current price $6.97Kidde AA Alkaline Batteries, for Smoke and Carbon Monoxide Detectors, 4 pack
Save withShipping, arrives tomorrowKidde Plug-In Smart Carbon Monoxide Detector & Indoor Air Quality Monitor with Battery Backup $89.97
2 optionsAvailable in additional 2 options$8997current price $89.97Options from $89.97 – $359.88Kidde Plug-In Smart Carbon Monoxide Detector & Indoor Air Quality Monitor with Battery Backup
894.5 out of 5 Stars. 89 reviewsSave withShipping, arrives in 2 daysSITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,1 Pack $33.54
3 optionsAvailable in additional 3 options$3354current price $33.54Options from $33.54 – $187.16SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,1 Pack
114.1 out of 5 Stars. 11 reviewsSave withShipping, arrives tomorrowFirst Alert BRK SC9120B (2 pack) Smoke & Carbon Monoxide Detector w/ Batt Backup $149.99
$14999current price $149.99First Alert BRK SC9120B (2 pack) Smoke & Carbon Monoxide Detector w/ Batt Backup
524.9 out of 5 Stars. 52 reviewsShipping, arrives in 3+ daysKidde Combination Photoelectric Smoke & Carbon Monoxide Alarm with Hardwire Interconnect | 900-CUAR $54.99
$5499current price $54.99Kidde Combination Photoelectric Smoke & Carbon Monoxide Alarm with Hardwire Interconnect | 900-CUAR
54 out of 5 Stars. 5 reviewsSave withShipping, arrives tomorrowBest seller Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included $38.97
Best seller
3 optionsAvailable in additional 3 options$3897current price $38.97Options from $38.97 – $116.91Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
5444.4 out of 5 Stars. 544 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrow
Related pages
- Rollback in Smoke Detectors
- Year Lithium Battery Co Detector
- Firex Smoke Alarm
- Kidde Battery Operated Smoke Alarm
- Top Rated Products in Smoke Detectors
- Smoke Ppf Smoke Detectors
- First Alert Carbon Monoxide Detectors
- First Alert Smoke Detectors
- Smoke & (CO) Carbon Monoxide Alarms
- Smoke Detectors
- All Kidde
- Smart Smoke & Gas Detectors