As an Amazon Associate I earn from qualifying purchases.
Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.
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. Rigorously tested to meet UL standards.


Test-hush feature - silences the unit for approximately 9 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 120VAC power source with 2-AA battery backup.

Keep your family safe with this 3-pack of talking hardwired smoke and carbon monoxide alarms; they're equipped with voice and location, so you are alerted of the danger and where it originates from across your house.
Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected. 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.


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.

10 year limited warranty; equipped with end of life signal chirp, so you know when it's time to replace the unit for your safety. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.
Features electrochemical carbon monoxide sensing technology as well as a photoelectric sensor equipped with Optipath 360 technology that enhances detection with 360 degree access and reliably detects smoke from smoldering fires. In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues.

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.
Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety. 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.

Quick & easy installation with guaranteed quality: product dimensions: 4 * 4 * 1. 5 inch, requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, 2. Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO and smoke levels, even if there's a power failureOperated by 2 x 1.
One manual, screws and anchor plugs; certified to meet the UL safety standards for your peace of mind and absolute confidence in our product. Simple to use: test/silence button enables you to test the alarm weekly, instantly alerting the entire household, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, even those in sleep.

1. FIRST ALERT
#ad
1 pack , FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup, White
#adFIRST ALERT #ad - Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure. 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.Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.
More information #ad
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection. 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. Rigorously tested to meet UL standards.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 1.9 Inches |
Length | 5.6 Inches |
Weight | 0.25 Pounds |
Width | 5.6 Inches |
Part Number | SC9120B |
Model | SC9120B |
Warranty | 7 Year Limited |
More information #ad
2. Kidde
#ad
Interconnect Combination Smoke & CO Alarm with Battery Backup, Hardwired, Voice Alert, Kidde Smoke & Carbon Monoxide Detector, Pack of 6
#adKidde #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.More information #ad
Fire & co detector in 1 unit with alert modes, "warning! Carbon Monoxide!", led lights, & voice alarm, "Fire! Fire!", that states, or "Low Battery!". Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup. Ul certified, 10-year limited warranty.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 5.6 Inches |
Length | 2.64 Inches |
Weight | 0.74 Pounds |
Width | 1.8 Inches |
Part Number | 900-0114A |
Model | KN-COSM-IBA |
Warranty | 10 year limited manufacturer |
More information #ad
3. 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. Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire.Test-hush feature - silences the unit for approximately 9 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 120VAC power source with 2-AA battery backup.
More information #ad
Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. 120v ac, all kidde brand hard wired smoke alarms are interconnectable with the KN-COSM-IBA. Fire & co detector in 1 unit with alert modes, led lights, "Warning! Carbon Monoxide!", that states, "Fire! Fire!", & voice alarm, or "Low Battery!".Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 6 Inches |
Length | 2 Inches |
Weight | 0.4 Pounds |
Width | 6 Inches |
Part Number | 21026041 |
Model | KN-COSM-IBA |
Warranty | 10 Year Limited |
More information #ad
4. FIRST ALERT
#ad
FIRST ALERT BRK SC7010BV-3 Hardwired Talking Photoelectric Smoke and Carbon Monoxide CO Detector, 3-Pack
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 pre-programmed locations in your home.Keep your family safe with this 3-pack of talking hardwired smoke and carbon monoxide alarms; they're equipped with voice and location, so you are alerted of the danger and where it originates from across your house.
More information #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. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected. 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 / BRK Brands, Inc. #ad |
Height | 2.4 Inches |
Length | 5.1 Inches |
Weight | 0.74 Pounds |
Width | 5.1 Inches |
Part Number | SC7010BVFF-3 |
Model | BRK SC7010BV-3 |
More information #ad
5. Kidde
#ad
Interconnect Combination Smoke & CO Alarm with Battery Backup, Kidde Smoke & Carbon Monoxide Detector, Hardwired, Voice Alert
#adKidde #ad - Fire & co detector in 1 unit with alert modes, that states, "Fire! Fire!", "warning! carbon Monoxide!", & voice alarm, LED lights, or "Low Battery!". Protects during a power failure - combo smoke and CO detector operates on a 120V power source with 9V front-loading battery backup.More information #ad
Photoelectric sensor technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire. 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.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
6. Kidde
#ad
Voice Warning, Kidde Smoke & Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, 6-Pack
#adKidde #ad - 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.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.
More information #ad
Pack of 6. Ul certified, 10-year limited warranty. 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. Smart interconnect allows you to connect up to 24 Kidde devices, giving you trusted protection throughout your home.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 5.5 Inches |
Length | 2.64 Inches |
Weight | 1 Pounds |
Width | 1.75 Inches |
Part Number | i12010SCO |
Model | i12010SCO |
Warranty | 10 year limited manufacturer |
More information #ad
7. FIRST ALERT
#ad
White, First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup
#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 2018.10 year limited warranty; equipped with end of life signal chirp, so you know when it's time to replace the unit for your safety. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected.
More information #ad
Rigorously tested to meet UL standards. Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure. Features electrochemical carbon monoxide sensing technology as well as a photoelectric sensor equipped with Optipath 360 technology that enhances detection with 360 degree access and reliably detects smoke from smoldering fires. In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2 Inches |
Length | 5 Inches |
Weight | 0.7 Pounds |
Width | 5 Inches |
Part Number | SC7010B |
Model | SC7010B |
Warranty | 7 Year Limited Warranty |
More information #ad
8. FIRST ALERT
#ad
White, First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide CO Detector with 10 Year Sealed Battery Backup
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Rigorously tested to meet UL standards, Emits T3 pattern. 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 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
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. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety. 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.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.69 Inches |
Length | 5.59 Inches |
Width | 2.25 Inches |
Part Number | SC9120LBL |
Model | BRK SC9120LBL |
Warranty | 7 |
More information #ad
9. GLBSUNION
#ad
2-Pack GLBSUNION Beeps Warning Smoke and CO Alarms for Basements Travel Home Office Kitchen Bedroom Car, Combination Smoke and Carbon Monoxide Detector Alarm, Battery Operated, Comply with UL 217/2034
#adGLBSUNION #ad - Four screws. 2-in-1 accurate, and instantly notifies you when dangerous smoke or co concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, all contained in 1 unit.Quick & easy installation with guaranteed quality: product dimensions: 4 * 4 * 1. 5 inch, requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, 2. Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO and smoke levels, even if there's a power failureOperated by 2 x 1.
More information #ad
5v aa batteries not included. You can get: 1. Two detector alarms with Mounting bracket, 3. Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85dB siren provides a clear, loud warning upon detection. One manual, screws and anchor plugs; certified to meet the UL safety standards for your peace of mind and absolute confidence in our product. Simple to use: test/silence button enables you to test the alarm weekly, instantly alerting the entire household, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, even those in sleep.
Brand | GLBSUNION #ad |
Manufacturer | ITERWELL ELECTRONICS CO., LIMITED #ad |
Height | 1.5 Inches |
Length | 3.94 Inches |
Width | 3.94 Inches |
Part Number | SC01 |
Model | GS528A |
More information #ad
10. Kidde
#ad
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. 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.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, & voice alarm, LED lights, that states, "Warning! Carbon Monoxide!", "fire! fire!", or "Low Battery!".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