As an Amazon Associate I earn from qualifying purchases.
5 seconds and the red led flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. Easy installation with quality: x-sense smoke carbon monoxide alarm combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-SENSE carbon monoxide alarm and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support.
10-year battery life: this combination smoke alarm and carbon monoxide 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.

10-year battery smoke and co detector: Provides 10 years of continuous power with a built-in lithium battery; saves you from battery replacement.
Combination alarm with co readings: the large LCD display clearly indicates real-time carbon monoxide CO levels in the surrounding air, as well as its battery level and working status. Simple installation: requires no rewiring; easy to mount this fire and CO alarm on any wall or ceiling with the included mounting bracket, screws and anchor plugs.

10-year battery-operated smoke and co alarm: a sealed lithium battery enables the unit to keep you and your family safe and sound for up to a decade with no need to replace batteries frequently; a low battery warning lets you know the unit is coming to its end of life.
Premium quality: made from a premium pc material, ensuring exceptional quality and protection; approved by the ETL and meets the UL 217 and UL 2034 safety standards;comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support.

Assured quality: approved by the etl and meets the ul 217 and UL 2034 safety standards; comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support. 10-year battery-operated smoke & co alarm: a sealed lithium battery enables the unit to monitor your home 24/7, keeping you and your family safe and sound for up to a decade without frequent battery replacement; a low battery warning indicates the unit is coming to its end of life.
Faster response to dangers with loud 85 db alarm: gives you the earliest possible warning of smoke and CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator; this alarm is sure to wake up you and your family, even when sound asleep. Simple installation & operation: Battery-operated unit installs quickly and easily without an electrician; one-button operation to test or silence the alarm.

Smoke monoxide detector detects fast and slow-burning fires with minimized false alarms, provides you the ultimate protection. Led light is green in normal and turn red in emergency, fire alarms smoke detectors detect the safety of your house at anytime.
How to test & silence: test and silence combo smoke co alarm by pressing test/silence button, mute time last for 10 minute. Smoke alarms can be mounted in ceiling or wall of every room, kitchen to ensure the safety of you and your family. 2-in-1 function: photoelectric smoke sensor and electrochemical CO sensor work independently, smoke alarm prior to CO alarm.

Hush function: this smoke and carbon monoxide alarm fire alarm has been redesigned from the inside out, and it will confirm that smoke triggers the alarm instead of interference by taking 3 separate smoke samples, minimizing false alarms to avoid waking you from sleep.
Simple to use: test/silence button enables you to test the alarm weekly, an alarm tone of over 85 dB will sound throughout your entire home, 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, instantly alerting the entire household, even those in sleep.

When the smoke alarm detects dangerous smoke, it will make more than 85dB alarm sound and the twinkling red LED indicator light at the same time; this alarm is sure to wake up you and your family, even when sound asleep. 10-year battery life:this combination smoke and carbon monoxide detector 10 years of continuous power with a built-in lithium battery; saving on energy while remaining eco-friendly; smoke and CO levels saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety.
Certified to meet the ul 217 & ul 2034 safety standards for your peace of mind and absolute confidence in our product. High accuracy & sensitivity: this smoke and carbon monoxide alarm Adopts the most advanced photoelectric sensor, enabling the alarm to quickly detect dangerous smoke levels from slow-burning, smoldering fires; provides the earliest possible warning of fire while minimizing false alarms.

Note:battery is not in the package. 2 in 1 detector: it can be served as both smoke detector and carbon monoxide detector alarm to detect the threat from these two harmful chemicals, Once the smoke and carbon monoxide detector detects these two gases, Very suitable for carbon monoxide gas leakage and fire place, they will beep.
And won’t miss the Chance to Change the New Battery. The led light flashes once every 10 seconds, indicating that the alarm has entered the silent mode. Accurate, which detects the larger particles of a smoldering fires. When carbon monoxide and smoke rise to alarm levels, reliable, High Sensitive & Quick Responsive: Equipped with electrochemical CO sensors and photoelectric smoke sensor that work independently of each other, the alarm provides a clear, loud warning when it is discovered. Photoelectric sensor Detects Smoke, Smoke Detector While Minimizing false alarms.

Quick and easy installation with guaranteed quality: requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 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, an alarm tone of over 85 dB will sound throughout your entire home, 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, even those in sleep.

1. X-Sense
#ad
SC03, X-Sense 10-Year Battery Not Hardwired Combination Smoke and Carbon Monoxide Detector Alarm, Auto-Check, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards
#adX-Sense #ad - High accuracy and sensitivity: x-sense carbon monoxide fire alarm is equipped with combination photoelectric smoke and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected; provides the ultimate protection from 2 deadly threats, all contained in 1 unit. Alarm types for more convenient: different alarm patterns of this carbon monoxide alarm and smoke alarm tell you it is either smoke or carbon monoxide is detected without checking the LCD display; smoke alarm: delivers 3 long beeps every 1.5 seconds and the red led flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. Easy installation with quality: x-sense smoke carbon monoxide alarm combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-SENSE carbon monoxide alarm and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support.
More information #ad
8 seconds and the red LED flashes with the alarm sound. Simple to use: the test/silence button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly, 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 instantly alert the entire household, even those in sleep.110-year battery life: this combination smoke alarm and carbon monoxide 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 | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Weight | 0.68 Pounds |
Width | 5.7 Inches |
Part Number | SC03 |
Model | SC03 |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
2. X-Sense
#ad
SC01, Auto-Check, Complies with UL 217 & UL 2034 Standards, Dual Sensor Fire and CO Alarm, X-Sense 10-Year Battery Smoke and Carbon Monoxide Detector Alarm Not Hardwired with LCD Display
#adX-Sense #ad - Assured after-sales services: x-Sense offer a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support. 2-in-1 protection: the smoke and carbon monoxide detector is equipped with both photoelectric smoke sensor and electrochemical CO sensor that both detect smoke and dangerous CO levels.10-year battery smoke and co detector: Provides 10 years of continuous power with a built-in lithium battery; saves you from battery replacement.
More information #ad
Ul listed: the smoke and carbon monoxide alarm meets the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product. Combination alarm with co readings: the large LCD display clearly indicates real-time carbon monoxide CO levels in the surrounding air, as well as its battery level and working status. Simple installation: requires no rewiring; easy to mount this fire and CO alarm on any wall or ceiling with the included mounting bracket, screws and anchor plugs.
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
3. X-Sense
#ad
SC06, 10-Year Battery-Operated Dual Sensor Fire & CO Alarm, Pack of 5, Compliant with UL 217 & UL 2034 Standards, X-Sense 2-in-1 Smoke and Carbon Monoxide Detector Alarm Not Hardwired
#adX-Sense #ad - Faster response to dangers with loud 85 dB Alarm: Upgraded photoelectric and electrochemical sensors significantly increase the sensitivity of the alarm for a faster response time while minimizing false alarms. Combination smoke and carbon monoxide Alarm: One alarm to protect against 2 deadly threats, including smoke and carbon monoxide; accurately detects carbon monoxide from any potential source.10-year battery-operated smoke and co alarm: a sealed lithium battery enables the unit to keep you and your family safe and sound for up to a decade with no need to replace batteries frequently; a low battery warning lets you know the unit is coming to its end of life.
More information #ad
Simple installation & operation: this battery-operated unit can be installed quickly and effortlessly without an electrician; one-button operation allows you to test and silence the alarm with ease. Premium quality: made from a premium pc material, ensuring exceptional quality and protection; approved by the ETL and meets the UL 217 and UL 2034 safety standards;comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support.
Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Weight | 0.69 Pounds |
Width | 5.7 Inches |
Model | SC06 |
More information #ad
4. X-Sense
#ad
Auto-Check, Dual Sensor Smoke and CO Alarm Complies with UL 217 & UL 2034 Standards, X-Sense 10-Year Battery Smoke and Carbon Monoxide Detector with LCD Display, SC08
#adX-Sense #ad - Protection from two deadly threats: one alarm protects against both dangerous smoke and carbon monoxide CO in the surrounding air; accurately detects CO from any potential sources; upgraded photoelectric and electrochemical sensors significantly increase the alarm’s sensitivity, enabling faster response times.Assured quality: approved by the etl and meets the ul 217 and UL 2034 safety standards; comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support. 10-year battery-operated smoke & co alarm: a sealed lithium battery enables the unit to monitor your home 24/7, keeping you and your family safe and sound for up to a decade without frequent battery replacement; a low battery warning indicates the unit is coming to its end of life.
More information #ad
Practical lcd display: clearly displays real-time CO levels above 30 ppm parts per million taken from the surrounding air, as well as the status of the alarm’s battery level. Faster response to dangers with loud 85 db alarm: gives you the earliest possible warning of smoke and CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator; this alarm is sure to wake up you and your family, even when sound asleep. Simple installation & operation: Battery-operated unit installs quickly and easily without an electrician; one-button operation to test or silence the alarm.
Brand | X-Sense #ad |
Manufacturer | X-Sense #ad |
Height | 2 Inches |
Length | 5.7 Inches |
Weight | 0.71 Pounds |
Width | 5.7 Inches |
Model | SC08 |
Warranty | 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support |
More information #ad
5. Ecoey
#ad
Dual Sensor Smoke CO Combo Alarm with Silence Function,FJ183-A,1 Pack, Ecoey Smoke Carbon Monoxide Detector Alarm, 10 Year Battery Operated
#adEcoey #ad - Low battery warning will open when you need to change smoke detector. Install easily: smoke alarmnot hardwired can be installed in 5 minutes by yourself, bedroom, coming with screws and bracket. Fire alarm tone is over 85 dB at 3 meter and will sound throughout your entire home.Smoke monoxide detector detects fast and slow-burning fires with minimized false alarms, provides you the ultimate protection. Led light is green in normal and turn red in emergency, fire alarms smoke detectors detect the safety of your house at anytime.
More information #ad
High-tech: this 2 in 1 smoke and carbon monoxide alarm has a built-in intelligent chipset. 10 years life: this smoke and carbon monoxide detector contains 1 built-in 3V lithium battery, and could keep for 10 year without replacing to protect environment and save time. How to test & silence: test and silence combo smoke co alarm by pressing test/silence button, mute time last for 10 minute. Smoke alarms can be mounted in ceiling or wall of every room, kitchen to ensure the safety of you and your family. 2-in-1 function: photoelectric smoke sensor and electrochemical CO sensor work independently, smoke alarm prior to CO alarm.
Brand | Ecoey #ad |
Manufacturer | SITERWELL ELECTRONICS CO.,LIMITED #ad |
Part Number | GS508C |
Model | GS508C |
More information #ad
6. ANKA
#ad
Smoke and Carbon Monoxide Detector Alarm,10-Year Battery Not Hardwired,Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check,AJ-939
#adANKA #ad - Reliable and 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, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit.Hush function: this smoke and carbon monoxide alarm fire alarm has been redesigned from the inside out, and it will confirm that smoke triggers the alarm instead of interference by taking 3 separate smoke samples, minimizing false alarms to avoid waking you from sleep.
More information #ad
Quick and easy installation with guaranteed quality: requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product. 10-year battery and 10-year sensor: this smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety. Simple to use: test/silence button enables you to test the alarm weekly, an alarm tone of over 85 dB will sound throughout your entire home, 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, instantly alerting the entire household, even those in sleep.
Brand | ANKA #ad |
Manufacturer | ANKA SCI-TECH CO., LIMITED. #ad |
Height | 1.38 Inches |
Length | 5.31 Inches |
Width | 5.31 Inches |
Part Number | AJ-939 |
Model | AJ-939 |
More information #ad
7. MOSUO
#ad
UL 217 & UL 2034 Standards, Dual Sensor Smoke CO Combo Alarm with Silence Function, Fire Alarm Smoke Detector with 10 Year Battery, Smoke Carbon Monoxide Detector Alarm, Not Hardwired
#adMOSUO #ad - Simple to use: the silence/test button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly. Easy install & high quality: this fire alarms smoke detectors can easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs, no hardwired need. Support app connection: you need to purchase WiFi Base ASIN: B08PY7GP91 to connect to APP.When the smoke alarm detects dangerous smoke, it will make more than 85dB alarm sound and the twinkling red LED indicator light at the same time; this alarm is sure to wake up you and your family, even when sound asleep. 10-year battery life:this combination smoke and carbon monoxide detector 10 years of continuous power with a built-in lithium battery; saving on energy while remaining eco-friendly; smoke and CO levels saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety.
More information #ad
Smart auto check: this carbon monoxide detector has been redesigned from the inside out, and it will confirm that smoke triggers the alarm instead of interference by taking 3 separate smoke samples, minimizing false alarms to avoid waking you from sleep. Certified to meet the ul 217 & ul 2034 safety standards for your peace of mind and absolute confidence in our product. High accuracy & sensitivity: this smoke and carbon monoxide alarm Adopts the most advanced photoelectric sensor, enabling the alarm to quickly detect dangerous smoke levels from slow-burning, smoldering fires; provides the earliest possible warning of fire while minimizing false alarms.
Brand | MOSUO #ad |
Manufacturer | HUIZHOU ANKA SCI-TECH co., LIMITED #ad |
Height | 1.57 Inches |
Length | 5.1 Inches |
Weight | 0.48 Pounds |
Width | 5.1 Inches |
Part Number | AJ-939 |
Model | AJ-939 |
More information #ad
8. sylzy
#ad
Combination Smoke and Carbon Monoxide Detector,Dual Sensor CO Smoke Alarm Detector with LCD Display and Sound Warning for Home,Kitchen,Office,School Complies with UL 217 & UL 2034 Standards
#adsylzy #ad - Lcd digital displays&widely used:when the fire smoke alarm detects smoke fire or detectes concentration of carbon monoxide exceeding the standard value, Bedroom, the LCD display will show the current value of the gas concentration, Bathroom, Meanwhile emit an alarm sound of 80 decibels, living room, Such as your Home, and the ring light flashes rapidly! Suitable for all the Place Possible to Produce Carbon Monoxide and Smoke, Hotel.Note:battery is not in the package. 2 in 1 detector: it can be served as both smoke detector and carbon monoxide detector alarm to detect the threat from these two harmful chemicals, Once the smoke and carbon monoxide detector detects these two gases, Very suitable for carbon monoxide gas leakage and fire place, they will beep.
More information #ad
Test button: malfunction and low battery warnings allow you to easily know the working status of the alarm; Test button enables silent modeyou to test the alarm weekly, When encountering a non-emergency situation(false alarms occur, you can immediately press the test button and the LED light will flash cyclically, indicating that it has entered the silent mode. And won’t miss the Chance to Change the New Battery. The led light flashes once every 10 seconds, indicating that the alarm has entered the silent mode. Accurate, which detects the larger particles of a smoldering fires. When carbon monoxide and smoke rise to alarm levels, reliable, High Sensitive & Quick Responsive: Equipped with electrochemical CO sensors and photoelectric smoke sensor that work independently of each other, the alarm provides a clear, loud warning when it is discovered. Photoelectric sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
Brand | sylzy #ad |
Manufacturer | sylzy #ad |
Part Number | ACJ-512COM |
Model | ACJ-512COM |
More information #ad
9. ANKA
#ad
Auto-Check,AJ-938, Smoke and Carbon Monoxide Detector Alarm,10-Year Battery Not Hardwired,Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards
#adANKA #ad - Hush function: this smoke and carbon monoxide alarm fire alarm has been redesigned from the inside out, and it will confirm that smoke triggers the alarm instead of interference by taking 3 separate smoke samples, minimizing false alarms to avoid waking you from sleep. 10-year battery and 10-year sensor: this smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety.Quick and easy installation with guaranteed quality: requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product.
More information #ad
Reliable and 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, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit. Simple to use: test/silence button enables you to test the alarm weekly, instantly alerting the entire household, an alarm tone of over 85 dB will sound throughout your entire home, 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, even those in sleep.
Brand | ANKA #ad |
Manufacturer | HUIZHOU ANKA SCI-TECH CO., LIMITED #ad |
Height | 1.38 Inches |
Length | 5.31 Inches |
Width | 5.31 Inches |
Part Number | AJ-938 |
Model | AJ-938 |
More information #ad
10. Kidde
#ad
Battery Powered, Combination Smoke & CO Alarm, Kidde Smoke & Carbon Monoxide Detector, Voice Alert
#adKidde #ad - Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries. 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
Fire & co detector in 1 unit with alert modes, that states, & voice alarm, "Fire! Fire!", led lights, "Warning! Carbon Monoxide!", or "Low Battery!". 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 |
Weight | 0.8 Pounds |
Width | 5.6 Inches |
Part Number | 21026043 |
Model | KN-COSM-BA |
Warranty | 5-year limited warranty |
More information #ad