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Event memory – red led flashes every 60 seconds to alert that a high level of carbon monoxide has been detected within the last 14 days.
One quick beep every 30 seconds alerts the unit is in error condition. Amber led flashes every second to indicate the unit is in fault mode. Sealed-in lithium battery – sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm. Led - green led flashes every 30 seconds to indicate the unit is operating properly. This cycle will continue for 4 minutes and then change to 2 patterns once a minute there after.

Smart interconnect allows you to connect up to 24 Kidde devices, giving you trusted protection throughout your home. Hardwired alarm contains a 10-year tamper proof backup battery to protect your home and family during power outages, eliminates the need for battery replacement.

Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. Ul certified, 10-year limited warranty.
1. Kidde
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Digital Display, Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup
#adKidde #ad - Protects during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure. Peace of mind - when co detection is normal, a red dot appears in the lower right corner & blinks; includes a test button.More information #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. Ul certified, 10-year limited warranty. Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage.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
2. Kidde
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Kidde Battery Operated Carbon Monoxide Alarm with Digital Display
#adKidde #ad - Easy to read digital display - allows for easy viewing of carbon monoxide levels. Ul certified, 10-year limited warranty. Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm.More information #ad
Co detector with alert modes & 2 LED lights that pulse for power & CO detection. Protects during a power failure - CO detector operates on 3-AA batteries.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 2.75 Inches |
Length | 4.5 Inches |
Weight | 0.01 Pounds |
Width | 1.5 Inches |
Part Number | 21008873 |
Model | KN-COPP-B-LPM |
Warranty | 10 Year Limited |
More information #ad
3. Kidde
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Kidde Carbon Monoxide Detector with Lithium Battery, Digital Display & 3 LED Lights
#adKidde #ad - Protects during a power failure - CO detector operates on a 10-year, sealed lithium battery. Ul certified, 10-year limited warranty. Easy installation & no battery fuss - CO alarm will automatically activate when attached to the mounting bracket.More information #ad
Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm. Co detector with alert modes & 3 LED lights that pulse for power, CO detection, & low battery.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 2.75 Inches |
Length | 4.5 Inches |
Weight | 0.54 Pounds |
Width | 1.5 Inches |
Part Number | 21029754 |
Model | C3010D |
Warranty | 10 year limited warranty |
More information #ad
4. Kidde
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Voice Alert, Kidde Smoke & Carbon Monoxide Detector, Battery Powered, Combination Smoke & CO Alarm
#adKidde #ad - Ul certified, 10-year limited warranty. Carbon Monoxide. And voice alarm, or "Low Battery. ". Fire. Warning. Test-hush feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling.More information #ad
Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire. Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries. Fire and co detector in 1 unit with alert modes, that states, LED lights, "Fire.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.6 Inches |
Length | 1.8 Inches |
Weight | 0.8 Pounds |
Width | 5.6 Inches |
Part Number | 21026043 |
Model | KN-COSM-BA |
Warranty | 5-year limited warranty |
More information #ad
5. Kidde
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CO Alarm with Replacement Alert, Kidde Carbon Monoxide Detector, AC-Plug-In with Battery Backup
#adKidde #ad - Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire. Co detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home.More information #ad
Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage. Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases. Ul certified, 10-year limited warranty.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
6. Kidde
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CO Alarm, Battery Powered with LED Lights, Kidde Carbon Monoxide Detector
#adKidde #ad - Sophisticated electronic components to protect you & your family from the dangers of carbon monoxide, 85 decibel alarm alerts of fire. Protects during a power failure - operates on 2-AA batteries, included with pack.More information #ad
Ul certified, 10-year limited warranty. Co detector with alert modes & LED lights that pulse for power, CO detection, & low battery. Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 11 Inches |
Length | 3 Inches |
Weight | 0.5 Pounds |
Width | 7 Inches |
Part Number | KN-COB-LP2 9CO5-LP2 |
Model | KN-COSM-BA |
Warranty | 10-Year warranty: Consult User Guide for more information. |
More information #ad
7. Kidde
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Kidde Smoke & Carbon Monoxide Detector, Hardwired, Voice Alert, Interconnect Combination Smoke & CO Alarm with Battery Backup
#adKidde #ad - Photoelectric sensor technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire. Fire & co detector in 1 unit with alert modes, & voice alarm, LED lights, that states, "warning! carbon Monoxide!", "Fire! Fire!", or "Low Battery!".More information #ad
Ul certified, 10-year limited warranty. Test-hush feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling. Protects during a power failure - combo smoke and CO detector operates on a 120V power source with 9V front-loading battery backup.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 1.85 Inches |
Length | 5.79 Inches |
Weight | 0.7 Pounds |
Width | 5.79 Inches |
Part Number | 21029735 |
Model | KN-COPE-IC |
Warranty | 7 year limited |
More information #ad
8. Kidde
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Kidde Worry-Free Carbon Monoxide Detector Alarm with 10 Year Sealed Battery | Model C3010
#adKidde #ad - Resets the Carbon Monoxide Alarm. Red led when a dangerous level of carbon monoxide is detected the red Led will pulse and a loud alarm pattern will sound. Test/reset button – tests the unit for proper operation. The carbon monoxide alarm pattern is 4 short beeps, followed by 5 seconds of silence, followed by 4 short beeps with a corresponding red Led flash.Event memory – red led flashes every 60 seconds to alert that a high level of carbon monoxide has been detected within the last 14 days.
More information #ad
Self activation – Alarm automatically activates when attached to the mounting bracket. One quick beep every 60 seconds is an indication of low battery power. Eliminates worry about battery removal or unauthorized deactivation of alarm. One quick beep every 30 seconds alerts the unit is in error condition. Amber led flashes every second to indicate the unit is in fault mode. Sealed-in lithium battery – sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm. Led - green led flashes every 30 seconds to indicate the unit is operating properly. This cycle will continue for 4 minutes and then change to 2 patterns once a minute there after.
Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 2.75 Inches |
Length | 4.5 Inches |
Weight | 0.25 Pounds |
Width | 1.5 Inches |
Part Number | 21010045 |
Model | 21010045 |
Warranty | 10 year limited warranty |
More information #ad
9. Kidde
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Hardwired with 10-Year Battery Backup, Kidde Smoke & Carbon Monoxide Detector, Voice Warning
#adKidde #ad - Ul certified, 10-year limited warranty. Intelligent technology – smoke and carbon monoxide detector combines ionization & electrochemical sensors to detect invisible fire particles & CO gas; 85dB alarm and voice warning sound when hazard is detected.Smart interconnect allows you to connect up to 24 Kidde devices, giving you trusted protection throughout your home. Hardwired alarm contains a 10-year tamper proof backup battery to protect your home and family during power outages, eliminates the need for battery replacement.
More information #ad
Led lights indicate the alarm's status, with a voice warning to indicate which type of threat is present; a Hush feature silences nuisance alarms, while the end-of-life alert lets you know when it's time to replace the unit.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.5 Inches |
Length | 5.5 Inches |
Width | 1.5 Inches |
Part Number | 21029756 |
Model | i12010SCO |
Warranty | 10 year limited warranty |
More information #ad
10. Kidde
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Hardwired, Voice Alert, Interconnect Combination Smoke & CO Alarm with Battery Backup, Kidde Smoke & Carbon Monoxide Detector
#adKidde #ad - Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup. Fire & co detector in 1 unit with alert modes, that states, LED lights, "Fire! Fire!", "Warning! Carbon Monoxide!", & voice alarm, or "Low Battery!".Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. Ul certified, 10-year limited warranty.
More information #ad
Test-hush feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling. Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire. 120v ac, all kidde brand hard wired smoke alarms are interconnectable with the KN-COSM-IBA.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 6 Inches |
Length | 2 Inches |
Weight | 1 Pounds |
Width | 6 Inches |
Part Number | 21026041 |
Model | KN-COSM-IBA |
Warranty | 10 Year Limited |
More information #ad