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Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering. Features an electrochemical carbon monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms; Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation.
Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety. Rigorously tested to meet UL standards, Emits T3 pattern.

85db alarm & voice warnings – “fire. Or “warning: carbon monoxide” so you know why the smoke & carbon monoxide detector is sounding. Hush feature silences nuisance or “false” alarms – with just the push of a button on the alarm itself.

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.
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.



Simple to use, with a single test/silence button, and side-load battery compartment; tamper-resistant locking brackets and universal mounting brackets make installation easy.
Features an electrochemical Carbon Monoxide sensing technology as well as an ionization sensor that detects the fine particles of a fast-burning fire. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.

Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. Test-hush feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling.

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
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. Features a sleek, low profile design to blend more fully into the wall and out of sight. S.

A loud 85-decibel alarm sounds when carbon monoxide, and Smoke levels begin to rise, Easy to Install and Use: The alarm can easily install with mounting bracket. Test/sience button: tests the unit for proper operation and resets the carbon monoxide alarm, Alarm.
10 year battery operated: this combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and co levels, even if there's a power failure; an end-of-life signal will let you know when it's time to replace the unit for safety.

3-in-1 smart alarm provides continuous, reliable protection. Features microprocessor intelligence to virtually eliminate nuisance alarms. Smart alarm technology provides peace of mind with this alarm — Fast-and-easy installation suitable for houses, apartments, dormitories and more.
1. FIRST ALERT
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First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide CO Detector with 10 Year Sealed Battery Backup , White
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. 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.Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering. Features an electrochemical carbon monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms; Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation.
More information #ad
Keep your family safer with this hardwired smoke and carbon monoxide alarm; The 10 year battery backup means constant monitoring for the life of the alarm even if there's a power failure. Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety. Rigorously tested to meet UL standards, Emits T3 pattern.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.69 Inches |
Length | 5.59 Inches |
Weight | 0.68 Pounds |
Width | 2.25 Inches |
Part Number | SC9120LBL |
Model | BRK SC9120LBL |
Warranty | 7 |
More information #ad
2. Kidde
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Voice Warning, Hardwired with Lithium Battery Backup, Kidde Smoke & Carbon Monoxide Detector
#adKidde #ad - Hardwired alarm with tamper proof backup battery – to help protect your home and family during power outages, eliminates the need for battery replacement.85db alarm & voice warnings – “fire. Or “warning: carbon monoxide” so you know why the smoke & carbon monoxide detector is sounding. Hush feature silences nuisance or “false” alarms – with just the push of a button on the alarm itself.
More information #ad
Ul certified, 10-year limited warranty. Advanced technology – smoke and carbon monoxide detector combines ionization & electrochemical sensors to detect invisible fire particles & CO gas. Interconnect alarms – allows you to connect up to 24 Kidde devices of this type, giving you trusted detection throughout your home.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.5 Inches |
Length | 5.5 Inches |
Weight | 1 Pounds |
Width | 1.5 Inches |
Part Number | 21029756 |
Model | i12010SCO |
Warranty | 10 year limited warranty |
More information #ad
3. X-Sense
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5-Pack, X-Sense 10-Year Battery Smoke and Carbon Monoxide Detector Alarm Not Hardwired with LCD Display, Auto-Check, Dual Sensor Fire and CO Alarm, Complies with UL 217 & UL 2034 Standards
#adX-Sense #ad - 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.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. 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.
Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Weight | 1.04 Pounds |
Width | 5.7 Inches |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
4. Kidde
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Battery Powered, Kidde Smoke & Carbon Monoxide Detector, Voice Alert, Combination Smoke & CO Alarm
#adKidde #ad - Fire and co detector in 1 unit with alert modes, that states, and voice alarm, LED lights, "Warning. Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries. 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
Fire. Or "low Battery. ". Ul certified, 10-year limited warranty. Carbon Monoxide. Fire. Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.6 Inches |
Length | 1.8 Inches |
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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Kidde Smoke & Carbon Monoxide Detector, Interconnect Combination Smoke & CO Alarm with Voice Alert, Hardwired with Lithium Battery Backup
#adKidde #ad - Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with lithium battery backup. 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
Photoelectric sensor technology - smoke detector detects visible fire particles, 85 decibel alarm alerts of fire. Fire & co detector in 1 unit with alert modes, "fire! Fire!", that states, "Warning! Carbon Monoxide!", & voice alarm, led lights, or "Low Battery!". Ul certified, 10-year limited warranty.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 5.59 Inches |
Length | 1.91 Inches |
Weight | 0.6 Pounds |
Width | 5.59 Inches |
Part Number | 21027323 |
Model | P4010ACSCO-W |
Warranty | 10 year limited |
More information #ad
6. FIRST ALERT
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White, First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector CO with Battery Backup. 6-Pack
#adFIRST ALERT #ad - Keep your family safe with this 6-pack of hardwired smoke and carbon monoxide alarms; The battery backup means constant monitoring, even if there's a power failure. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.Simple to use, with a single test/silence button, and side-load battery compartment; tamper-resistant locking brackets and universal mounting brackets make installation easy.
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. Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85-decibel siren provides a clear, loud warning upon detection. Features an electrochemical Carbon Monoxide sensing technology as well as an ionization sensor that detects the fine particles of a fast-burning fire. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.2 Inches |
Length | 5.6 Inches |
Weight | 0.7 Pounds |
Width | 5.6 Inches |
Part Number | SC9120BFF-6 |
Model | BRK SC9120B-6 |
More information #ad
7. Kidde
#ad
Voice Alert, Hardwired, Interconnect Combination Smoke & CO Alarm with Battery Backup, Kidde Smoke & Carbon Monoxide Detector
#adKidde #ad - Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire. Ul certified, 10-year limited warranty.Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. Test-hush feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling.
More information #ad
Fire & co detector in 1 unit with alert modes, "fire! fire!", LED lights, & voice alarm, that states, "Warning! Carbon Monoxide!", or "Low Battery!". Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup. 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
8. First Alert
#ad
White, First Alert BRK PRC710 Smoke and Carbon Monoxide Alarm with Built-In 10-Year Battery
#adFirst Alert #ad - States/cities where required. Rigorously tested to meet UL standards. A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise. 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.Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
More information #ad
Complies with all current 10 year legislation in U. 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. 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. Features a sleek, low profile design to blend more fully into the wall and out of sight. S.
Brand | First Alert #ad |
Manufacturer | First Alert #ad |
Height | 0.96 Inches |
Length | 4.92 Inches |
Weight | 0.6 Pounds |
Width | 4.92 Inches |
Part Number | PRC710 |
Model | PRC710 |
More information #ad
9. Lecoolife
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3 Pack Photoelectric Smoke and Carbon Monoxide Detector, Smoke Alarm Sealed-in 10 Year Lithium Battery-Operated White
#adLecoolife #ad - No hardwired anymore. Environment friendly, without smell, radiation or harm. It can keep you and your family safe at any time. Low battery signal: low battery voltage signal and end of life warning ensures the co detector can work normal.A loud 85-decibel alarm sounds when carbon monoxide, and Smoke levels begin to rise, Easy to Install and Use: The alarm can easily install with mounting bracket. Test/sience button: tests the unit for proper operation and resets the carbon monoxide alarm, Alarm.
More information #ad
Combo smoke and co detector: 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 battery operated: this combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and co levels, even if there's a power failure; an end-of-life signal will let you know when it's time to replace the unit for safety.
Brand | Lecoolife #ad |
Manufacturer | Lecoolife #ad |
Part Number | GS811-A |
Model | 81 |
More information #ad
10. Universal Security Instruments
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Model MIC1509S,white, Universal Security Instruments Hardwired 10 Year Tamper Proof Permanent Power Sealed Battery 3-in-1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm
#adUniversal Security Instruments #ad - Features quick activation battery pull tab that makes the alarm easy to install while the deactivation key makes it the batteries safe for disposal.3-in-1 smart alarm provides continuous, reliable protection. Features microprocessor intelligence to virtually eliminate nuisance alarms. Smart alarm technology provides peace of mind with this alarm — Fast-and-easy installation suitable for houses, apartments, dormitories and more.
More information #ad
Includes 10 year permanent power Alkaline Batteries. Comes with a ten-year limited warranty. Alkaline batteries are safer and more eco-friendly dispose than lithium batteries. Provides temperature and humidity compensation.Brand | Universal Security Instruments #ad |
Manufacturer | Universal Security Instruments #ad |
Height | 5.75 Inches |
Length | 1.75 Inches |
Weight | 0.66 Pounds |
Width | 5.75 Inches |
Part Number | MIC1509S |
Model | MIC1509S |
Warranty | 10-Year Limited Warranty |
More information #ad