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Protects during a power failure - combo smoke and CO alarm operates on a sealed, lithium battery. 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.


Features a sleek, low profile design to blend more fully into the wall and out of sight. 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.
S. Complies with all current 10 year legislation in U. A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise. Rigorously tested to meet UL standards. States/cities where required. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.


Certified to work with smart home systems such as ring Alarm, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub sold separately; Not compatible with Wink or Onelink.
Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected. Includes an 85-decibel horn, single test/silence button, side access to a tamper-resistant battery door, and pins that lock the alarm to the mounting bracket. This device is certified to work with Ring; Requires Ring Alarm to Work with Ring.

Photoelectric & electrochemical sensing technology - combination smoke & CO detector detects visible fire particles, 85 decibel alarm alerts of fire. 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.


Etl certified: meets the ul 217 & ul 2034 safety standards for your peace of mind and absolute confidence in our product. Informative lcd: clearly indicates real-time carbon monoxide CO levels in the surrounding air, as well as its battery level and working status.

2-in-1 accurate, reliable & highly sensitive alarm: Combination smoke detector and carbon monoxide detector can sensitively detect the threat of these two gases. Energy saving: operated by 3 aaa batteries, You can hear the alarm when the power is low, don't worry about when to replace the battery.
1. Kidde
#ad
Pack of 2, Kidde Smoke & Carbon Monoxide Detector, Interconnect Combination Smoke & CO Alarm, Voice Alert, Battery Powered
#adKidde #ad - Ul certified, 10-year limited warranty. Ionization sensor technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire. Fire & co detector in 1 unit with alert modes, "Warning Carbon Monoxide", LED lights, "fire", & voice alarm, that states, or "Low Battery".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 alarm operates on 2-AA batteries.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 5.6 Inches |
Length | 2.64 Inches |
Weight | 0.82 Pounds |
Width | 1.8 Inches |
Part Number | 900-0102A |
Model | KN-COSM-BA |
Warranty | 10 year limited manufacturer |
More information #ad
2. Kidde
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Combination Smoke & CO Alarm with Voice Alert, Kidde Smoke & Carbon Monoxide Detector, Lithium Battery Powered
#adKidde #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 alarm operates on a sealed, lithium battery. 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.
More information #ad
Fire & co detector in 1 unit with alert modes, "fire! fire!", "Warning! Carbon Monoxide!", that states, LED lights, & voice alarm, or "Low Battery!". Ul certified, 10-year limited warranty.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
3. Kidde
#ad
Kidde Intelligent Smoke & Carbon Monoxide Detector, Combination Smoke & CO Alarm with Voice Alert, Battery Powered
#adKidde #ad - Ul certified, 10-year limited warranty. 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, LED lights, "Warning! Carbon Monoxide!", "Fire! Fire!", & voice alarm, or "Low Battery!".More information #ad
Ionization & electrochemical sensor technologies - smoke detector detects invisible fire particles, while the CO alarm detects poisonous carbon monoxide gas; 85 decibel alarm alerts of fire. Test-hush feature - silences the unit for approximately 9 minutes.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.6 Inches |
Length | 5.6 Inches |
Weight | 0.01 Pounds |
Width | 1.8 Inches |
Part Number | KN-COSM-XTR-BA |
Model | KN-COSM-XTR-BA |
More information #ad
4. First Alert
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First Alert BRK PRC710 Smoke and Carbon Monoxide Alarm with Built-In 10-Year Battery , White
#adFirst Alert #ad - 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.Features a sleek, low profile design to blend more fully into the wall and out of sight. 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.
More information #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. S. Complies with all current 10 year legislation in U. A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise. Rigorously tested to meet UL standards. States/cities where required. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
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
5. vitowell
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Travel Portable Photoelectric Fire&Co Alarm for Home and Kitchen, 4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated
#advitowell #ad - Arranty and service: our products provide after-sales service. If you have any questions about our products, you can contact us, we will reply to you as soon as possible within 24 hours. Low battery signal mute, quiets low battery signal for up to 8 hours.More information #ad
Photoelectric sensor detects smoke while minimizing false alarms. Combo smoke detector/carbon monoxide alarm detects two threats. Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Electrochemical CO sensor alerts you to carbon monoxide danger.Brand | vitowell #ad |
Manufacturer | vitowell #ad |
Weight | 0.35 Pounds |
Part Number | 0002 |
Model | 0002 |
More information #ad
6. FIRST ALERT
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First Alert Z-Wave Smoke Detector & Carbon Monoxide Alarm, 2nd Generation, Works with Ring Alarm
#adFIRST ALERT #ad - Help keep your family safe with this battery-powered smoke detector and carbon monoxide alarm; includes 2 AA batteries. Enjoy improved compatibility, easier setup and a seamless in-app experience. The z-wave plus with smart start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device.Certified to work with smart home systems such as ring Alarm, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub sold separately; Not compatible with Wink or Onelink.
More information #ad
Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam. Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected. Includes an 85-decibel horn, single test/silence button, side access to a tamper-resistant battery door, and pins that lock the alarm to the mounting bracket. This device is certified to work with Ring; Requires Ring Alarm to Work with Ring.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 8.5 Inches |
Length | 3.66 Inches |
Weight | 0.68 Pounds |
Width | 6.75 Inches |
Part Number | 1044807 |
Model | 1044807 |
Warranty | 7 Year Limited Warranty |
More information #ad
7. Kidde
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Combination Smoke & CO Alarm with Lithium Battery, Kidde Smoke & Carbon Monoxide Detector, Replacement Alert
#adKidde #ad - Ul certified, 10-year limited warranty. No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery.Photoelectric & electrochemical sensing technology - combination smoke & CO detector detects visible fire particles, 85 decibel alarm alerts of fire. 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.
More information #ad
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 |
Weight | 0.31 Pounds |
Width | 5.22 Inches |
Part Number | 21010170 |
Model | P3010k-CO |
Warranty | 10 year limited warranty |
More information #ad
8. Kidde
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Kidde KN-COSM-BA Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking Alarm , WHITE
#adKidde #ad - Talking alarm announces the hazard type detected, helping to speed up reaction time. A single unit can be installed where previously two were needed. Battery safeguard ensures the unit cannot be accidentally mounted without batteries installed.More information #ad
Test-reset button tests alarm circuitry and triggers the voice announcement. Meets requirements of Underwriters Laboratories UL, an independent facility that tests products for safety compliance.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 1.8 Inches |
Length | 5.6 Inches |
Weight | 0.65 Pounds |
Width | 5.6 Inches |
Part Number | 900010202 |
Model | KN-COSM-BA |
Warranty | Ten-year limited warranty |
More information #ad
9. X-Sense
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X-Sense 10 Year Battery Not Hardwired Smoke and Carbon Monoxide Detector with LCD Display, Auto-Check, SC01, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards
#adX-Sense #ad - 2-in-1 protection: equipped with both photoelectric smoke sensor and electrochemical CO sensor that both detect smoke and dangerous CO levels. Assured quality: we offer a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support.Etl certified: meets the ul 217 & ul 2034 safety standards for your peace of mind and absolute confidence in our product. Informative lcd: clearly indicates real-time carbon monoxide CO levels in the surrounding air, as well as its battery level and working status.
More information #ad
Simple installation: requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs. 10-year battery: provides 10 years of continuous power with a built-in lithium battery; saves you from battery replacement.Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Weight | 0.69 Pounds |
Width | 5.7 Inches |
Part Number | SC01-1-5 |
Model | SC01 |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
10. Lecoolife
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Smoke Detector and Carbon Monoxide Detector Battery Powered with Test/Reset Button 2 Pack
#adLecoolife #ad - Quick easy installation: requires no rewiring, easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs. Application co detector place: this carbon monoxide detector suitable for all place where it is possible to produce carbon monoxide, such as your home kitchen, bedroom, hotel, bathroom, or you are in the barbecue time, your parking garage.More information #ad
Sound and light alarm: when a dangerous level of carbon monoxide is detected, the red light will flashes and a loud alarm pattern will sound-Loud 85 decibel carbon monoxide alarm with red light flash to protect your family's life and property safety from CO detector. 2-in-1 accurate, reliable & highly sensitive alarm: Combination smoke detector and carbon monoxide detector can sensitively detect the threat of these two gases. Energy saving: operated by 3 aaa batteries, You can hear the alarm when the power is low, don't worry about when to replace the battery.
Brand | Lecoolife #ad |
Manufacturer | NINGBO SITERWELL ELECTRONICS CO LTD #ad |
Part Number | GS528A |
Model | GS811-A |
More information #ad