Best Combination Smoke . Reviews June, 2021

Combination Smoke and Carbon Monoxide Detector with Display, Battery Operated Smoke CO Alarm Detector

Search only BQQZHZ brand name
Combination Smoke and Carbon Monoxide Detector with Display, Battery Operated Smoke CO Alarm Detector

Current price: 19.98 USD


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Weight: 4.47 ounces

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.

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WJZXTEK Combination Smoke and Carbon Monoxide Detector CO Alarm, Voice Warning Carbon Detector Alarm Clock, Electronic Equipment, Power Detection Equipment, Comply with UL217/UL2034

Search only WJZXTEK brand name
WJZXTEK Combination Smoke and Carbon Monoxide Detector CO Alarm, Voice Warning Carbon Detector Alarm Clock, Electronic Equipment, Power Detection Equipment, Comply with UL217/UL2034

Current price: 14.99 USD


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Height: 1.57 Inches

Length: 3.93 Inches

Width: 3.93 Inches

Weight: 85 Grams

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

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Kidde P4010ACSCO-W 120-Volt Hardwired Combination Smoke/CO Voice Alarm with Intelligent Wire-Free Interconnect and 10-Year Battery (6)

Search only Kidde brand name
Kidde P4010ACSCO-W 120-Volt Hardwired Combination Smoke/CO Voice Alarm with Intelligent Wire-Free Interconnect and 10-Year Battery (6)

Current price: 320 USD

Saving: $55.00 (15%)


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  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation

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First Alert SCO7CN Combination Smoke and Carbon Monoxide Detector with Voice and Location, Battery Operated

Search only FIRST ALERT brand name
First Alert SCO7CN Combination Smoke and Carbon Monoxide Detector with Voice and Location, Battery Operated

Current price: 39.25 USD


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Height: 5 Inches

Length: 5 Inches

Width: 2 Inches

Weight: 0.67 Pounds

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house

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Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack

Search only Kidde brand name
Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack

Current price: 90.99 USD


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Height: 1 Inches

Length: 1 Inches

Width: 2 Inches

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning

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Kidde KN-COSM-IBA 21006377 Hardwire Combination Smoke/Carbon Monoxide Alarm, 6-pack

Search only brand name
Kidde KN-COSM-IBA 21006377 Hardwire Combination Smoke/Carbon Monoxide Alarm, 6-pack

Current price: 167.26 USD

Saving: $8.00 (5%)


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Weight: 0.01 Pounds

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning

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Walkbee Wireless Battery Pack Combination-Smoke-Carbon-Monoxide-detectors and Alarm,Installed in Bedroom, Kitchen, Living Room,Home

Search only WALKBEE brand name
Walkbee Wireless Battery Pack Combination-Smoke-Carbon-Monoxide-detectors and Alarm,Installed in Bedroom, Kitchen, Living Room,Home

Current price: 22.99 USD


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  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning
  • We Provide a 12-Month Worry-Free Refund Guarantee and a 5-Year Warranty. If You Have Any Questions or Concerns, Please Do Not Hesitate to Contact Us at Any Time, and We Will Reply to You within 24 Hours. You Can fully Trust Our Products.
  • Suitable for all the Place Possible to Produce Carbon Monoxide , Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.
  • 2-in-1 Accurate, 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, 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.
  • Quick & 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
  • LCD Display: Clearly indicates real-time carbon monoxide (CO) and smoke concentration in the surrounding air,Real-time monitoring protects you and your family.

More Info

First Alert SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated

Search only FIRST ALERT brand name
First Alert SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated

Current price: 29.99 USD

Saving: $25.00 (45%)


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Height: 5 Inches

Length: 2 Inches

Width: 5 Inches

Weight: 0.6 Pounds

Warranty: -------

  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning
  • We Provide a 12-Month Worry-Free Refund Guarantee and a 5-Year Warranty. If You Have Any Questions or Concerns, Please Do Not Hesitate to Contact Us at Any Time, and We Will Reply to You within 24 Hours. You Can fully Trust Our Products.
  • Suitable for all the Place Possible to Produce Carbon Monoxide , Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.
  • 2-in-1 Accurate, 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, 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.
  • Quick & 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
  • LCD Display: Clearly indicates real-time carbon monoxide (CO) and smoke concentration in the surrounding air,Real-time monitoring protects you and your family.
  • 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)
  • It can ship within the US except New York
  • 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards. Emits T3 Pattern
  • Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling
  • Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

More Info

Combination Smoke and Carbon Monoxide Detector - Battery Operated with LCD Display and Sound Warning Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards(3 Pcs)

Search only FDUIOSPF brand name
Combination Smoke and Carbon Monoxide Detector - Battery Operated with LCD Display and Sound Warning Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards(3 Pcs)

Current price: 48.68 USD


Check price and availability


  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning
  • We Provide a 12-Month Worry-Free Refund Guarantee and a 5-Year Warranty. If You Have Any Questions or Concerns, Please Do Not Hesitate to Contact Us at Any Time, and We Will Reply to You within 24 Hours. You Can fully Trust Our Products.
  • Suitable for all the Place Possible to Produce Carbon Monoxide , Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.
  • 2-in-1 Accurate, 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, 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.
  • Quick & 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
  • LCD Display: Clearly indicates real-time carbon monoxide (CO) and smoke concentration in the surrounding air,Real-time monitoring protects you and your family.
  • 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)
  • It can ship within the US except New York
  • 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards. Emits T3 Pattern
  • Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling
  • Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • 【Satisfaction guarantee】: If you ever have any issue with co and smoke detector combo, feel free to contact us.
  • 【High accuratel sensor】: Smoke detectors using high accurate electrochemical sensor, alerts you to carbon monoxide danger and insure the safety of your life. Photoelectric sensor is also equipped to detect smoke accurately while minimizing false alarms
  • 【Easy to install& battery powered】: The smoke and carbon monoxide detector requires no wiring so you can easily install it in mintues without electricians on the wall or anywhere at home! Powered by three 1.5V AA batteries, the gas detector continuously monitors carbon monoxide and smoke levels even in the event of a power failure, keeping you and your family safe!
  • 【Digital display & sound-light alarm】: When the fire smoke alarm detects a smoke fire or detected concentration of carbon monoxide exceeds the standard value, the LCD display will show the current value of the gas concentration, meanwhile emit an alarm sound of 80 decibels, and the ring light flashes rapidly!
  • 【2 in 1 detector】: It can serve as both smoke detector and carbon monoxide detector to detect the threat from these two harmful chemicals. One single unit instead of two saves your money and home space for installation but performs equally and even better.

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Combination Smoke and Carbon Monoxide Detector Smoke Alarm, WJZXTEK 2Pack Smoke and Carbon Detector Alarm with Beeps Voice Warning, Power Detection Electronic Equipment, Comply with UL217/UL2034

Search only WJZXTEK brand name
Combination Smoke and Carbon Monoxide Detector Smoke Alarm, WJZXTEK 2Pack Smoke and Carbon Detector Alarm with Beeps Voice Warning, Power Detection Electronic Equipment, Comply with UL217/UL2034

Current price: 25.99 USD


Check price and availability


  • LCD display concentration PPM, real-time monitoring to protect your safety
  • Smoke CO Detector Operated unit installs quickly and easily without an electrician at home or bedroom.
  • Photoelectric Sensor Detects Smoke, Smoke Detector While Minimizing false alarms.
  • Carbon Monoxide Detector alarm Using High accurate Electrochemical Sensor, alerts you to Carbon Monoxide Danger.
  • Combination Smoke Detector and Carbon Monoxide Detector Can Detect the threat of these Two Gases.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician, To ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Wire-free interconnection with other intelligent alarms
  • P4010ACSCO-W
  • All interconnected alarms will sound when one alarm goes off
  • 10-year battery back-up for protection against power outages
  • Combination Smoke and CO detector requires hardwire installation
  • It can ship within the US except New York
  • 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, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home
  • Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house
  • Model name: Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable - 21026041, White, 3 Pack
  • Package Weight: 1.0 pounds
  • Battery Backup and Voice Warning
  • We Provide a 12-Month Worry-Free Refund Guarantee and a 5-Year Warranty. If You Have Any Questions or Concerns, Please Do Not Hesitate to Contact Us at Any Time, and We Will Reply to You within 24 Hours. You Can fully Trust Our Products.
  • Suitable for all the Place Possible to Produce Carbon Monoxide , Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.
  • 2-in-1 Accurate, 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, 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.
  • Quick & 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
  • LCD Display: Clearly indicates real-time carbon monoxide (CO) and smoke concentration in the surrounding air,Real-time monitoring protects you and your family.
  • 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)
  • It can ship within the US except New York
  • 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards. Emits T3 Pattern
  • Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling
  • Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
  • 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 a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • 【Satisfaction guarantee】: If you ever have any issue with co and smoke detector combo, feel free to contact us.
  • 【High accuratel sensor】: Smoke detectors using high accurate electrochemical sensor, alerts you to carbon monoxide danger and insure the safety of your life. Photoelectric sensor is also equipped to detect smoke accurately while minimizing false alarms
  • 【Easy to install& battery powered】: The smoke and carbon monoxide detector requires no wiring so you can easily install it in mintues without electricians on the wall or anywhere at home! Powered by three 1.5V AA batteries, the gas detector continuously monitors carbon monoxide and smoke levels even in the event of a power failure, keeping you and your family safe!
  • 【Digital display & sound-light alarm】: When the fire smoke alarm detects a smoke fire or detected concentration of carbon monoxide exceeds the standard value, the LCD display will show the current value of the gas concentration, meanwhile emit an alarm sound of 80 decibels, and the ring light flashes rapidly!
  • 【2 in 1 detector】: It can serve as both smoke detector and carbon monoxide detector to detect the threat from these two harmful chemicals. One single unit instead of two saves your money and home space for installation but performs equally and even better.
  • Simple to use, A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Battery-operated unit installs quickly and easily without an electrician,Can connect to other compatible detectors, to ensure all alarms will sound when threat is detected
  • 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
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

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