As an Amazon Associate I earn from qualifying purchases.
Hush feature silences nuisance or “false” alarms – with just the push of a button on the alarm itself.

Ul certified, 10-year limited warranty. Fire & co detector in 1 unit with alert modes, that states, "Warning! Carbon Monoxide!", LED lights, & voice alarm, "Fire! Fire!", or "Low Battery!".

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Dust cover. Keep your family safe with this 3-pack of hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure.
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 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.
Rigorously tested to meet UL standards. 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. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.

Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire. Carbon Monoxide.


Product 1: hardwired smoke detector with battery backup included ensures that you'll be alerted to a fire, even during a power outage. Product 1: large base makes mounting easy, while a front battery pull lets you activate the smoke alarm without removing it from the mounting bracket.
Product 1: whole home family protection - place 1 fire alarm on each level of your home & in your bedroom; maximum of 24 Kidde devices can be interconnected. Product 2: fire & co detector in 1 unit with alert modes, lED lights, "Warning! Carbon Monoxide!", & voice alarm, "fire! Fire!", that states, or "Low Battery!". Product 2: protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup.


Features an electrochemical carbon monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm.

Hardwired alarm with replaceable battery backup: this combination smoke and carbon monoxide detector is AC hardwired with a 9 V battery backup, so the alarm can continuously monitor for smoke and CO even if there is a power outage.
Interconnects up to 18 units for full coverage: you can connect up to 18 X-Sense 2-in-1 hardwired alarm, so when one alarm is triggered, all will sound together throughout your home.
1. Kidde
#ad
Kidde Smoke & Carbon Monoxide Detector, Hardwired with Lithium Battery Backup, Voice Warning
#adKidde #ad - 85db alarm & voice warnings – “fire. Or “warning: carbon monoxide” so you know why the smoke & carbon monoxide detector is sounding. Advanced technology – smoke and carbon monoxide detector combines ionization & electrochemical sensors to detect invisible fire particles & CO gas.Hush feature silences nuisance or “false” alarms – with just the push of a button on the alarm itself.
More information #ad
Interconnect alarms – allows you to connect up to 24 Kidde devices of this type, giving you trusted detection throughout your home. Hardwired alarm with tamper proof backup battery – to help protect your home and family during power outages, eliminates the need for battery replacement. Ul certified, 10-year limited warranty.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
2. Kidde
#ad
Voice Alert, Hardwired, Kidde Smoke & Carbon Monoxide Detector, Interconnect Combination Smoke & CO Alarm with Battery Backup
#adKidde #ad - 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.Ul certified, 10-year limited warranty. Fire & co detector in 1 unit with alert modes, that states, "Warning! Carbon Monoxide!", LED lights, & voice alarm, "Fire! Fire!", or "Low Battery!".
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. Meets safety standards set by Underwriters Laboratories UL and interconnects with other KN-COSM-IBA models. Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire.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
3. FIRST ALERT
#ad
White, FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup. 3-Pack
#adFIRST ALERT #ad - Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected. Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor that detects the fine particles of a fast-burning fire.Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Dust cover. Keep your family safe with this 3-pack of hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure.
More information #ad
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. 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.
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-3 |
Model | BRK SC9120B-3 |
More information #ad
4. FIRST ALERT
#ad
White, First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup
#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. In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues.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.
More information #ad
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. Rigorously tested to meet UL standards. 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. 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 | 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
5. Kidde
#ad
Voice Alerts, Kidde Smoke & Carbon Monoxide Detector, Hardwired Interconnect, Combination Smoke & CO Alarm with Battery Backup
#adKidde #ad - Ul certified, 10-year limited warranty. Hardwired with backup battery - combo smoke and carbon monoxide detector is hardwired into a 120V power source with 9V battery backup.Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire. Carbon Monoxide.
More information #ad
". Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings. Will interconnect with up to 24 other devices including smoke, CO and heat alarms. Fire. Or "Warning. Easy installation – battery door is on the front for quick replacement.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
Kidde Smoke & Carbon Monoxide Detector, Hardwired with Lithium Battery Backup, Interconnect Combination Smoke & CO Alarm with Voice Alert
#adKidde #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 lithium battery backup.More information #ad
Photoelectric sensor technology - smoke detector detects visible fire particles, 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. 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
7. Kidde
#ad
Interconnect Combination Smoke & CO Alarm, Hardwired Smoke Alarm with Battery Backup Included, Pack of 6 & Smoke & Carbon Monoxide Detector, Hardwired, Interconnect, Kidde Smoke Detector
#adKidde #ad - Product 2: test-hush feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling. Product 1: ionization sensing technology may detect invisible fire particles, associated with flaming fires, quickly and sound an 85dB alarm.Product 1: hardwired smoke detector with battery backup included ensures that you'll be alerted to a fire, even during a power outage. Product 1: large base makes mounting easy, while a front battery pull lets you activate the smoke alarm without removing it from the mounting bracket.
More information #ad
Product 2: ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire. Product 1: whole home family protection - place 1 fire alarm on each level of your home & in your bedroom; maximum of 24 Kidde devices can be interconnected. Product 2: fire & co detector in 1 unit with alert modes, lED lights, "Warning! Carbon Monoxide!", & voice alarm, "fire! Fire!", that states, or "Low Battery!". Product 2: protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup.
Brand | Kidde #ad |
More information #ad
8. FIRST ALERT
#ad
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup
#adFIRST ALERT #ad - 9-volt battery included; 10-year limited warranty. Easy to install universal mount bracket. Simple to use silence/test button; separate smoke and CO latching alarm indicators.More information #ad
Inter-connectable with BRK and First Alert hardwired smoke and carbon monoxide alarms. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Superior carbon monoxide sensor and dual ionization smoke alarm.Brand | FIRST ALERT #ad |
Manufacturer | BRK Brands #ad |
Height | 5.69 Inches |
Length | 5.59 Inches |
Weight | 0.65 Pounds |
Width | 2.25 Inches |
Part Number | SC9120B |
Model | SC9120B |
More information #ad
9. FIRST ALERT
#ad
FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide Detector with Battery Backup and FIRST ALERT BRK9120b6CP Smoke Detector Alarm | Hardwired with Backup Battery
#adFIRST ALERT #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.Features an electrochemical carbon monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm.
More information #ad
Keep your family safe with this hardwired smoke alarm; the 10-year battery backup means constant monitoring for the life of the alarm, even if there's a power failure. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
More information #ad
10. X-Sense
#ad
Hardwired Interconnected Smoke and CO Detector Alarm with Replaceable Battery Backup, X-Sense Hardwired Combination Smoke and Carbon Monoxide Detector, 1-Pack, XP04
#adX-Sense #ad - Premium quality: made from high-quality materials and components, this hardwired combination alarm offers a long lifespan of up to 10 years. Easy installation: All mounting hardware is included for fast and simple installation in minutes.Hardwired alarm with replaceable battery backup: this combination smoke and carbon monoxide detector is AC hardwired with a 9 V battery backup, so the alarm can continuously monitor for smoke and CO even if there is a power outage.
More information #ad
More accurate with intelligent technology: this hardwired smoke and carbon monoxide detector combines an advanced photoelectric smoke sensor and a Figaro electrochemical CO sensor to detect smoke from smoldering fires and dangerous CO levels quickly. Interconnects up to 18 units for full coverage: you can connect up to 18 X-Sense 2-in-1 hardwired alarm, so when one alarm is triggered, all will sound together throughout your home.
Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 1.5 Inches |
Length | 5.5 Inches |
Weight | 0.5 Pounds |
Width | 5.5 Inches |
Part Number | XP04 |
Model | XP04 |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
30-90% Disocunts Found!
We found that some of the products on this list are now discounted on Amazon! Do you want to see these products?
Disclaimer: We earn small fee from purchases made on Amazon.