Internet #202026789

Model # 21027426

Store SKU #622269

Store SO SKU #1000331013

0047871074501

Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Intelligent Hazard Sensing

  • Battery-operated smoke and CO alarm; no hardwiring required
  • Change AA batteries every 6 months to avoid low battery chirp
  • Voice alert announces the type of hazard; ideal for bedrooms
$ 31 97
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Product Overview

  • Battery-operated smoke and CO alarm; no hardwiring required
  • Change AA batteries every 6 months to avoid low battery chirp
  • Voice alert announces the type of hazard; ideal for bedrooms
Intelligent combination alarm offers you and your family protection from fire and carbon monoxide. The intelligent combination alarm uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protect you and your family from carbon monoxide. Voice warning alerts you to the type of danger present. The Intelligent Alarm combines the detection capabilities of an ionization smoke sensor which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires with that of an electro-chemical sensor, which is used to detect CO. 10-year warranty. Shop all Kidde Smoke Detectors here.
  • Provides protection from smoke and carbon monoxide in one device
  • Voice alert announces the type of hazard; ideal for bedrooms
  • Test/reset button checks the unit's functionality and hush false alarms
  • Hush mode activated and hush mode cancelled voice announcement
  • Battery safe guard, unit cannot be mounted without batteries installed
  • Low-battery warning alerts you when the battery needs replacing
  • Combination smoke and carbon monoxide alarm
  • Available in a 2-pack THD online 204830114
  • Replace with Kidde AA battery model# 21025831
  • Ionization smoke sensor
  • UL/CSFM Ref. Kidde Part KN-COSM-XTR-BA
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Smoke and carbon monoxide detector utilizes an ionization sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • Product not available for sale in the state of California





  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Battery-operated smoke and CO alarm; no hardwiring required
  • Change AA batteries every 6 months to avoid low battery chirp
  • Voice alert announces the type of hazard; ideal for bedrooms
Model #: 21027426
Sku #: 622269
Internet #: 202026789

Intelligent combination alarm offers you and your family protection from fire and carbon monoxide. The intelligent combination alarm uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protect you and your family from carbon monoxide. Voice warning alerts you to the type of danger present. The Intelligent Alarm combines the detection capabilities of an ionization smoke sensor which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires with that of an electro-chemical sensor, which is used to detect CO. 10-year warranty. Shop all Kidde Smoke Detectors here.

  • Provides protection from smoke and carbon monoxide in one device
  • Voice alert announces the type of hazard; ideal for bedrooms
  • Test/reset button checks the unit's functionality and hush false alarms
  • Hush mode activated and hush mode cancelled voice announcement
  • Battery safe guard, unit cannot be mounted without batteries installed
  • Low-battery warning alerts you when the battery needs replacing
  • Combination smoke and carbon monoxide alarm
  • Available in a 2-pack THD online 204830114
  • Replace with Kidde AA battery model# 21025831
  • Ionization smoke sensor
  • UL/CSFM Ref. Kidde Part KN-COSM-XTR-BA
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Smoke and carbon monoxide detector utilizes an ionization sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • Product not available for sale in the state of California





  • Click here for more information on Electronic Recycling Programs

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Key Features

Product Overview
Key Features
  • Battery-operated smoke and CO alarm; no hardwiring required
  • Change AA batteries every 6 months to avoid low battery chirp
  • Voice alert announces the type of hazard; ideal for bedrooms
Intelligent combination alarm offers you and your family protection from fire and carbon monoxide. The intelligent combination alarm uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protect you and your family from carbon monoxide. Voice warning alerts you to the type of danger present. The Intelligent Alarm combines the detection capabilities of an ionization smoke sensor which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires with that of an electro-chemical sensor, which is used to detect CO. 10-year warranty. Shop all Kidde Smoke Detectors here.
  • Provides protection from smoke and carbon monoxide in one device
  • Voice alert announces the type of hazard; ideal for bedrooms
  • Test/reset button checks the unit's functionality and hush false alarms
  • Hush mode activated and hush mode cancelled voice announcement
  • Battery safe guard, unit cannot be mounted without batteries installed
  • Low-battery warning alerts you when the battery needs replacing
  • Combination smoke and carbon monoxide alarm
  • Available in a 2-pack THD online 204830114
  • Replace with Kidde AA battery model# 21025831
  • Ionization smoke sensor
  • UL/CSFM Ref. Kidde Part KN-COSM-XTR-BA
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Smoke and carbon monoxide detector utilizes an ionization sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • Product not available for sale in the state of California





  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Battery-operated smoke and CO alarm; no hardwiring required
  • Change AA batteries every 6 months to avoid low battery chirp
  • Voice alert announces the type of hazard; ideal for bedrooms
Model #: 21027426
Sku #: 622269
Internet #: 202026789

Intelligent combination alarm offers you and your family protection from fire and carbon monoxide. The intelligent combination alarm uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protect you and your family from carbon monoxide. Voice warning alerts you to the type of danger present. The Intelligent Alarm combines the detection capabilities of an ionization smoke sensor which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires with that of an electro-chemical sensor, which is used to detect CO. 10-year warranty. Shop all Kidde Smoke Detectors here.

  • Provides protection from smoke and carbon monoxide in one device
  • Voice alert announces the type of hazard; ideal for bedrooms
  • Test/reset button checks the unit's functionality and hush false alarms
  • Hush mode activated and hush mode cancelled voice announcement
  • Battery safe guard, unit cannot be mounted without batteries installed
  • Low-battery warning alerts you when the battery needs replacing
  • Combination smoke and carbon monoxide alarm
  • Available in a 2-pack THD online 204830114
  • Replace with Kidde AA battery model# 21025831
  • Ionization smoke sensor
  • UL/CSFM Ref. Kidde Part KN-COSM-XTR-BA
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Smoke and carbon monoxide detector utilizes an ionization sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • Product not available for sale in the state of California





  • Click here for more information on Electronic Recycling Programs

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Customers Also Compared These

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Brand Kidde Kidde Kidde Kidde
Name Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Intelligent Hazard Sensing Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Ionization Sensor Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Photoelectric Sensor 10-Year Sealed Battery Smoke and Carbon Monoxide Combination Detector
Price
Was $36.97
$24.88
Save $12.09 (33%)
$24.88
$42.97
$49.97
Ratings (637) (456) (310) (431)
Power Source Battery Battery Battery Battery
Alarm Sensor Type Ionization Ionization Photoelectric Photoelectric
Alarm/Detector Features Hush Feature,Voice Alert Hush Feature,Voice Alert Hush Feature,Tamper Resistant,Voice Alert 10-Year Battery,Hush Feature,Tamper Resistant
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Specifications

Dimensions

Product Depth (in.)
1.7
Product Height (in.)
5.75
Product Width (in.)
5.75

Details

Alarm Sensor Type
Ionization
Alarm Type
Carbon Monoxide,Smoke
Alarm/Detector Features
Hush Feature,Voice Alert
Battery Type Required
AA
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Battery
Returnable
90-Day
Voltage (volts)
1.3

Warranty / Certifications

Certifications and Listings
1-UL Listed

Specifications

Dimensions

Product Depth (in.)
1.7
Product Height (in.)
5.75
Product Width (in.)
5.75

Details

Alarm Sensor Type
Ionization
Alarm Type
Carbon Monoxide,Smoke
Alarm/Detector Features
Hush Feature,Voice Alert
Battery Type Required
AA
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Battery
Returnable
90-Day
Voltage (volts)
1.3

Warranty / Certifications

Certifications and Listings
1-UL Listed

Questions & Answers

Does this come with a 10 year protection?

Does this come with a 10 year protection?
Asked by: Sherry
Once again HD screws up. In the document section for this product they show 2 different User Guides, 1 for the -B model (7 year warranty ) and another for the -BA model (10 year warranty). Elsewhere the Kidde Expert explained that 7 year end of life chirp was common from 11/2000 to 1/2/2013 date of manufacture and then UL allowed them to go to 10 year end of life chirp after 1/2/2013 date of manufacture. Sure wish HD would get their act together in presenting accurate data and quit confusing us, the CUSTOMER.
Answered by: Hudson
Date published: 2019-10-14

Does this come with wire connectors? Or bare wire?

three wire connector on alarm
Asked by: James
no
Answered by: mrG
Date published: 2018-12-23

I have a home where more than three alarms are needed. If I buy two sets of three will they all ...

I have a home where more than three alarms are needed. If I buy two sets of three will they all be on the same frequency and be integrated with each other?
Asked by: BT
no
Answered by: winston
Date published: 2018-12-31

Can I use lithium batteries?

Asked by: 740
are regular double a batteries used
Answered by: mmarie
Date published: 2018-12-03
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Customer Reviews

Kidde Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Intelligent Hazard Sensing is rated 4.5 out of 5 by 637.
Rated 5 out of 5 by from Combination Smoke and Carbon Monoxide Alarm with Voice First Installed this Kiddie M/N# KN-COSM-B combo smoke/CO alarm in October of 2004. It worked fine the entire time it was installed. it uses (3) AA batteries not the typical 9V. The voice prompts (when testing and low battery) are clear and loud enough to hear easily. On the negative side, It hit it's built in expiration date the night before last at 3AM. (7 years and 1 month after the initial installation) Would be nice if they could build it to last 10 years - but then i guess they'd sell less of them because I plan to buy another.. Excerpt from the owners manual about built-in end-of-life countdown timer included below... (from page 5) • After seven (7) years of cumulative power up, this unit will “chirp” every 30 seconds. This is an "operational end of life" feature which will indicate that it is time to replace the alarm.
Date published: 2011-11-23
Rated 5 out of 5 by from I am glad that I went with a replaceable batteries... I am glad that I went with a replaceable batteries unit (ie., not a totally sealed unit with a 10 year battery). That made replacing my old detector a snap. I even used the old mounting plate... no new holes needed. Also, there are times that you want to "quiet" the alarm, not just "hush" it. For example, smoke from a cooking error. Ability to pop out the batteries helps.
Date published: 2019-10-02
Rated 5 out of 5 by from This is a very good model. Does it’s job well.... This is a very good model. Does it’s job well. Word of caution, this smoke/co2 alarm is very sensitive, to the point where it needs to be placed away from the kitchen, as the slightest wisp of smoke or steam sets this alarm off. And it’s loud, which is vital, but annoying.
Date published: 2019-09-25
Rated 5 out of 5 by from This replace an earlier model which is out of production. It lasted about 5 years. This is the th... This replace an earlier model which is out of production. It lasted about 5 years. This is the third Kidde unit I have used. Apparently the sensors wears out over time and needs replacement. Still Kidde is one of the best units I trust for family safety.
Date published: 2019-08-13
Rated 5 out of 5 by from All of the worked perfectly. Thank you. It's great whenever... All of the worked perfectly. Thank you. It's great whenever you don't have to go back to a store with defective items.
Date published: 2019-09-03
Rated 5 out of 5 by from Setup worked just like the instructions said. Have confidence it... Setup worked just like the instructions said. Have confidence it will alert us if the need ever arises.
Date published: 2019-09-26
Rated 4 out of 5 by from Had to enlist help of my nephew who had experience... Had to enlist help of my nephew who had experience and necessary tools.
Date published: 2019-10-02
Rated 5 out of 5 by from Love the front load. Battery easy to use reasonable priced... Love the front load. Battery easy to use reasonable priced
Date published: 2019-07-30
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