As an Amazon Associate I earn from qualifying purchases.
Test-hush feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling.

Voice alarm – announces the hazard type detected thereby helping to speed up the correct reaction. Combination smoke and carbon monoxide alarm – Smoke and CO sensing technologies work together to detect real fires faster and reduce nuisance alarms.

Photoelectric & electrochemical sensing technology - combination smoke & CO detector detects visible fire particles, 85 decibel alarm alerts of fire. No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery.



Fire & co detector in 1 unit with alert modes, test-silence button, LED lights, & Replacement Alert: a chirp that notifies when the unit needs to be replaced. No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery.



S. Features a sleek, low profile design to blend more fully into the wall and out of sight. States/cities where required. Features electrochemical carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms.
10-year limited ; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for your safety the date printed on the item is the manufacturing date, not the expiration date. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Rigorously tested to meet UL standards.

1. Kidde
#ad
Kidde Smoke & Carbon Monoxide Detector, Combination Smoke & CO Alarm with Voice Alert, Lithium Battery Powered
#adKidde #ad - Ul certified, 10-year limited warranty. Photoelectric & electrochemical sensor technologies - smoke detector detects invisible fire particles, while the carbon monoxide detects poisonous carbon monoxide gas; 85 decibel alarm alerts of fire.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
Protects during a power failure - combo smoke and CO alarm operates on a sealed, lithium battery. Fire & co detector in 1 unit with alert modes, & voice alarm, LED lights, "Warning! Carbon Monoxide!", that states, "Fire! Fire!", or "Low Battery!".Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.22 Inches |
Length | 5.22 Inches |
Width | 1.6 Inches |
Part Number | 21026065 |
Model | P3010CU |
Warranty | 10 year limited |
More information #ad
2. Kidde
#ad
Kidde 21026065 Smoke & Carbon Monoxide Alarm with Voice Warning
#adKidde #ad - Self-activation – Alarm automatically activates when attached to the mounting bracket. Photoelectric sensor – smoke alarm contains advanced photoelectric sensor that may detect visible particles associated with smoldering fires sooner than ionization alarms.Voice alarm – announces the hazard type detected thereby helping to speed up the correct reaction. Combination smoke and carbon monoxide alarm – Smoke and CO sensing technologies work together to detect real fires faster and reduce nuisance alarms.
More information #ad
Eliminates worry about battery removal or unauthorized deactivation of alarm. Alarm announces “fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. Sealed-in lithium battery – sealed-in lithium power supply; No battery replacement required over the 10 year life of the alarm.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.22 Inches |
Length | 5.22 Inches |
Weight | 0.33 Pounds |
Width | 1.6 Inches |
Part Number | 21026065 |
Model | P3010CU |
Warranty | 10 year limited |
More information #ad
3. Kidde
#ad
Replacement Alert, Kidde Smoke & Carbon Monoxide Detector, Combination Smoke & CO Alarm with Lithium Battery
#adKidde #ad - Fire & co detector in 1 unit with alert modes, test-silence button, LED light, & Replacement Alert: a chirp that notifies when the unit needs to be replaced.Photoelectric & electrochemical sensing technology - combination smoke & CO detector detects visible fire particles, 85 decibel alarm alerts of fire. No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery.
More information #ad
Ul certified, 10-year limited warranty. Replacement alert - can be silenced for 3 days at a time, maximum of 30 days; tamper-resistant technology deters removal of the unit or battery from the wall or ceiling.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 1.6 Inches |
Length | 5.22 Inches |
Width | 5.22 Inches |
Part Number | 21010170 |
Model | P3010k-CO |
Warranty | 10 year limited warranty |
More information #ad
4. Kidde
#ad
Interconnect Combination Smoke & CO Alarm, Kidde Smoke & Carbon Monoxide Detector, Voice Alert, Lithium Battery Powered
#adKidde #ad - Co detector with voice alert modes & LED lights that pulse for power, CO detection, & low battery. Protects during a power failure - combo smoke and CO alarm operates on a 10-year, sealed lithium battery.More information #ad
Ul certified, 10-year limited warranty. Photoelectric sensor technology - smoke detector detects visible fire particles, 85 decibel alarm alerts of fire. Low battery warning feature indicates when the battery needs replacement.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.59 Inches |
Length | 1.91 Inches |
Weight | 0.6 Pounds |
Width | 5.59 Inches |
Part Number | 21027311 |
Model | P4010DCSCO-W |
Warranty | 10-year limited warranty |
More information #ad
5. Kidde
#ad
Voice Alert, Battery Powered, Combination Smoke & CO Alarm, Kidde Smoke & Carbon Monoxide Detector
#adKidde #ad - Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries. Fire & co detector in 1 unit with alert modes, that states, "Warning Carbon Monoxide", & voice alarm, LED lights, "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. Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire at 10 feet.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.6 Inches |
Length | 1.8 Inches |
Width | 5.6 Inches |
Part Number | 21026043 |
Model | 21026043 |
Warranty | 5-year limited warranty |
More information #ad
6. Kidde
#ad
Kidde Smoke & Carbon Monoxide Detector, Hardwired with Lithium Battery Backup
#adKidde #ad - Intelligent technology - combines ionization & electrochemical sensors to detect invisible fire particles & CO gas, 85 decibel alarm alerts of fire.Fire & co detector in 1 unit with alert modes, test-silence button, LED lights, & Replacement Alert: a chirp that notifies when the unit needs to be replaced. No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery.
More information #ad
Ul certified, 10-year limited warranty. Replacement alert - can be silenced for 3 days at a time, maximum of 30 days; tamper-resistant technology deters removal of the unit or battery from the wall or ceiling.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
7. Kidde
#ad
Interconnect Combination Smoke & CO Alarm with Battery Backup, Voice Alert, Hardwired, Kidde Smoke & Carbon Monoxide Detector
#adKidde #ad - Ul certified, 10-year limited warranty. Fire & co detector in 1 unit with alert modes, "fire fire", LED lights, "Warning Carbon Monoxide", & voice alarm, that states, or "Low Battery". Photoelectric sensor technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire.More information #ad
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 |
Width | 5.79 Inches |
Part Number | 21029735 |
Model | KN-COPE-IC |
Warranty | 7 year limited |
More information #ad
8. Kidde
#ad
Battery Powered, Kidde Intelligent Smoke & Carbon Monoxide Detector, Combination Smoke & CO Alarm with Voice Alert
#adKidde #ad - Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries. Test-hush feature - silences the unit for approximately 9 minutes. Fire & co detector in 1 unit with alert modes, "fire Fire", LED lights, that states, & voice alarm, "Warning Carbon Monoxide", or "Low Battery".More information #ad
Ul certified, 10-year limited warranty. Ionization & electrochemial sensor technologies - smoke detector detects invisible fire particles, while the CO alarm detects poisonous carbon monoxide gas; 85 decibel alarm alerts of fire.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Weight | 0.01 Pounds |
Part Number | KN-COSM-XTR-BA |
Model | KN-COSMXTR-BA |
More information #ad
9. First Alert
#ad
First Alert BRK PRC710 Smoke and Carbon Monoxide Alarm with Built-In 10-Year Battery
#adFirst Alert #ad - 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. Complies with all current 10 year legislation in U.S. Features a sleek, low profile design to blend more fully into the wall and out of sight. States/cities where required. Features electrochemical carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms.
More information #ad
A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise. 10-year limited ; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for your safety the date printed on the item is the manufacturing date, not the expiration date. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Rigorously tested to meet UL standards.
Brand | First Alert #ad |
Manufacturer | First Alert #ad |
Height | 0.96 Inches |
Length | 4.92 Inches |
Weight | 1.4 Pounds |
Width | 4.92 Inches |
Part Number | PRC710 |
Model | PRC710 |
More information #ad
10. Kidde
#ad
Kidde Carbon Monoxide Detector, CO Alarm, Battery Powered with LED Lights
#adKidde #ad - Co detector with alert modes & LED lights that pulse for power, CO detection, & low battery. Ul certified, 10-year limited warranty. Protects during a power failure - operates on 2-AA batteries, included with pack.More information #ad
Sophisticated electronic components to protect you & your family from the dangers of carbon monoxide, 85 decibel alarm alerts of fire. 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-COB-LP2 9CO5-LP2 |
Warranty | 10-Year warranty: Consult User Guide for more information. |
More information #ad