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Plug-in that still works during a power failure - 2-AA batteries included provide backup for your CO alarm in the event of a power outage. Ul certified, 10-year limited warranty.

Etl listed: this smoke and carbon monoxide detector has been approved by the ETL and meets UL 217 and UL 2034 safety standards. 10-year battery: the fire and co alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage.
Assured after-sales services: x-sense offers a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support. Simple installation: requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs.

4 inches, item width is 1. 38 inches and item height is 5 inches. All first alert co alarms are rigorously tested to meet UL standards. Simple to use, with a single test/silence button; A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels.
7 year limited warranty; equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety. To ensure complete protection make sure to place one on each level of your home and in each bedroom. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018.

Two alarms in one detects carbon monoxide and explosive gas. Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display. Battery backup 9 volt battery included.
Ul certified, 5-year Limited Warranty. Carbon monoxide co alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Low battery warning feature indicates when the battery needs replacement.


A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. All first alert cO alarms are rigorously tested to meet UL standards.
Features an advanced electrochemical carbon monoxide sensor; Peak level feature displays the highest concentration of carbon monoxide measured. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018.

120 volt ac plug in carbon monoxide alarm. Uses electrochemical carbon monoxide sensor the most accurate technology available.


Smoke alarm features a low battery alert, a side battery drawer that slides open for easy battery replacement, a blinking power indicator, a missing battery guard, and an optional pin to lock the battery and unit in place for tamper resistance, plus offers a 10 year limited ; carbon monoxide detector offers a 5 year limited.
Carbon monoxide detector features electrochemical sensing technology to detect leaks from multiple sources; smoke alarm uses an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire.

85 decibel alarm - when the gas concentration reaches a certain level, the carbon monoxide alarm immediately emits an audible alarm >85 dB, allowing you to react quickly and protect your home. Security certification:UL2034. Led digital display - real-time monitoring and display of readings, so you can quickly understand the environmental conditions.
1. Kidde
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CO Alarm with Replacement Alert, Kidde Carbon Monoxide Detector, AC Plug-In with Battery Backup
#adKidde #ad - Co detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home. Easy & quick installation - plugs into any standard AC wall outlet.Plug-in that still works during a power failure - 2-AA batteries included provide backup for your CO alarm in the event of a power outage. Ul certified, 10-year limited warranty.
More information #ad
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas. Kidde is the #1 most installed fire safety brand in North America* - and a trusted leader in fire safety for more than 100 years.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 4.5 Inches |
Length | 2.75 Inches |
Weight | 0.04 Pounds |
Width | 1.5 Inches |
Part Number | 900-0263 |
Model | KN-COB-DP2 |
More information #ad
2. X-Sense
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X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display
#adX-Sense #ad - 2-in-1 protection: the combination smoke and CO detector detects both smoke and carbon monoxide faster and more accurately using a photoelectric smoke sensor and an electrochemical CO sensor.Etl listed: this smoke and carbon monoxide detector has been approved by the ETL and meets UL 217 and UL 2034 safety standards. 10-year battery: the fire and co alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage.
More information #ad
Combination alarm with co readings: the informative LCD will show you the battery level and real-time CO levels in PPM parts per million. Assured after-sales services: x-sense offers a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support. Simple installation: requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs.
Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Width | 5.7 Inches |
Part Number | SC07 |
Model | Smoke and Carbon Monoxide Detector |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
3. FIRST ALERT
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First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
#adFIRST ALERT #ad - Low battery signal mute, quiets low battery signal for up to 8 hours. Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room. Item length is 3.4 inches, item width is 1. 38 inches and item height is 5 inches. All first alert co alarms are rigorously tested to meet UL standards. Simple to use, with a single test/silence button; A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels.
More information #ad
Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure. 7 year limited warranty; equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety. To ensure complete protection make sure to place one on each level of your home and in each bedroom. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5 Inches |
Length | 3.4 Inches |
Weight | 0.26 Pounds |
Width | 1.38 Inches |
Part Number | FATCO605 |
Model | CO605 |
More information #ad
4. Kidde
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Kidde Nighthawk Carbon Monoxide Detector & Propane, AC-Plug-In with Battery Backup, Digital Display , Natural, & Explosive Gas Detector, White
#adKidde #ad - Loud pulsing alarm that will sound to alert you to a potential problem. Three convenient mounting options. Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset.Two alarms in one detects carbon monoxide and explosive gas. Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display. Battery backup 9 volt battery included.
More information #ad
Displays CO concentration. Easy to install co and explosive gas alarm with three convenient mounting options including AC wall outlet, plugin six foot power cord, or table top. Kidde’s carbon monoxide alarms meet the requirements of Underwriters Laboratories UL, an independent facility that tests products for compliance with widely-accepted safety standards. Ul certified, 5-year Limited Warranty. Carbon monoxide co alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Low battery warning feature indicates when the battery needs replacement.
Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 11 Inches |
Length | 2 Inches |
Weight | 1 Pounds |
Width | 8 Inches |
Part Number | KI-21006677 |
Model | KN-COEG-3 |
Warranty | 5 Year Limited |
More information #ad
5. Kidde
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Digital Display, Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup
#adKidde #ad - Easy installation - plug can be installed in any outlet of your home; or use the attached extension cord to place on a table or shelf. Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage.More information #ad
Peace of mind - when co detection is normal, a red dot appears in the lower right corner & blinks; includes a test button. Protects during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure. Ul certified, 10-year limited warranty.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 1.75 inches |
Length | 6.06 inches |
Weight | 3 Pounds |
Width | 3.75 inches |
Part Number | 900-0076 |
Model | KN-COPP-3 |
Warranty | 10 Year Limited |
More information #ad
6. FIRST ALERT
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White, First Alert CO615 Plug-in Alarm with Battery Backup and Digital Display 1 Pack
#adFIRST ALERT #ad - Keep your family safe with this digital display, plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure.A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. All first alert cO alarms are rigorously tested to meet UL standards.
More information #ad
To ensure complete protection make sure to place one on each level of your home and in each bedroom. 7 year limited warranty; equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety. Features an advanced electrochemical carbon monoxide sensor; Peak level feature displays the highest concentration of carbon monoxide measured. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5 Inches |
Length | 3.4 Inches |
Weight | 0.6 Pounds |
Width | 1.7 Inches |
Part Number | FATCO615 |
Model | CO615 |
Warranty | 7-year Limited Warranty |
More information #ad
7. FIRST ALERT
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First Alert CO600 Plug-In Carbon Monoxide Detector
#adFIRST ALERT #ad - Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet. Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.120 volt ac plug in carbon monoxide alarm. Uses electrochemical carbon monoxide sensor the most accurate technology available.
More information #ad
A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels. End of life timer; 7 year limited warranty. To ensure complete protection make sure to place 1 on each level of your home and in each bedroom. 7 year limited warranty; equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.8 Inches |
Length | 8.5 Inches |
Weight | 0.3 Pounds |
Width | 6.75 Inches |
Part Number | CO600 |
Model | FATCO600 |
More information #ad
8. Kidde
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Digital Display, Kidde Nighthawk Carbon Monoxide Detector, Pack of 2, AC-Plug-In with Battery Backup
#adKidde #ad - Ul certified, 10-year limited warranty. Includes 2 kidde Nighthawk Carbon Monoxide Detectors. Plug-in carbon monoxide detector can be installed in any outlet of your home; use the attached extension cord to place on a table or shelf. Still works during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure.More information #ad
Digital display shows the level of carbon monoxide the CO alarm is sensing, updated every 15 seconds. When co detection is normal, a red dot appears in the lower right corner & blinks; includes a test button that also resets the CO detector.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 6.06 Inches |
Length | 2 Inches |
Weight | 1 Pounds |
Width | 1.75 Inches |
Part Number | 900-0076 |
Model | KN-COPP-3 |
Warranty | 10 year limited manufacturer |
More information #ad
9. FIRST ALERT
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RED, First Alert 1039879 Smoke Alarm and Carbon Monoxide Detector
#adFIRST ALERT #ad - Both the smoke alarm and carbon monoxide detector feature a loud 85-decibel alarm, and an end-of-life signal so you know when to replace the unit; each unit operates with one 9-volt battery, a single test/silence button, and is UL listed.Smoke alarm features a low battery alert, a side battery drawer that slides open for easy battery replacement, a blinking power indicator, a missing battery guard, and an optional pin to lock the battery and unit in place for tamper resistance, plus offers a 10 year limited ; carbon monoxide detector offers a 5 year limited.
More information #ad
To ensure complete protection make sure to place one carbon monoxide detector on each level of your home and in each bedroom. This first alert combo pack will help keep you and your family safe; it includes one First Alert carbon monoxide alarm and one First Alert smoke alarm, and both are battery-operated for continuous monitoring, even during a power outage. Carbon monoxide detector features electrochemical sensing technology to detect leaks from multiple sources; smoke alarm uses an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert / BRK Brands, Inc. #ad |
Height | 8.5 inches |
Length | 7 inches |
Weight | 0.9 Pounds |
Width | 2.5 inches |
Part Number | 1039879 |
Model | 1039879 |
Warranty | 10 YEARS |
More information #ad
10. KOABBIT
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Plug-in Carbon Monoxide Detectors,Koabbit CO Level Monitoring Alarm with Light & Digital Display for Home/Kitchen/Bedroom,Accurate & Easy to Install,UL20342 Pack
#adKOABBIT #ad - New upgraded carbon monoxide detector - Imported electrochemical sensors, more responsive, reliable readings, to avoid false readings and false alarms. Easy to use - plug and play, saving installation time.85 decibel alarm - when the gas concentration reaches a certain level, the carbon monoxide alarm immediately emits an audible alarm >85 dB, allowing you to react quickly and protect your home. Security certification:UL2034. Led digital display - real-time monitoring and display of readings, so you can quickly understand the environmental conditions.
More information #ad
Warranty & return service guarantee: 2 Years Warranty, if you have any technical problems, please contact us, we will solve your problem as soon as possible. Protect your home: carbon monoxide detectors are suitable for bedroom, living room, hotel, bathroom, office, restaurant, apartment, kitchen, garage, etc.Brand | KOABBIT #ad |
Manufacturer | Shenzhen Wei'an Environmental Protection Electronic Technology Co., Ltd. #ad |
Weight | 0.28 Pounds |
Part Number | WA996 |
Model | WA996 |
More information #ad