Internet #205711626

Model # 21027519

Store SKU #1000535870

0047871105694

Code One Hardwire Smoke and Carbon Monoxide Combination Detector with AA Battery Backup and Voice Alarm

  • Smoke and CO alarm requires hardwire installation
  • AA battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off
$ 47 97
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Product Overview

  • Smoke and CO alarm requires hardwire installation
  • AA battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off
Hardwired 120 Volt Interconnected Combination Carbon Monoxide and Smoke Alarm provide 2 important safety devices in a single unit. The alarm includes a voice warning system that announces Fire, Carbon Monoxide, Low Battery or Smart Hush Activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. Shop all Kidde Smoke Detectors here.
  • 120 Volt with AA battery backup
  • All interconnected alarms will sound when one alarm goes off
  • Intelligent multi sensor alarm
  • Peak level-alerts
  • Smart hush-silences the unit during nuisance alarm situations
  • *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
  • Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part KN-COSM-IBA



  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Smoke and CO alarm requires hardwire installation
  • AA battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off
Model #: 21027519
Sku #: 1000535870
Internet #: 205711626

Hardwired 120 Volt Interconnected Combination Carbon Monoxide and Smoke Alarm provide 2 important safety devices in a single unit. The alarm includes a voice warning system that announces Fire, Carbon Monoxide, Low Battery or Smart Hush Activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. Shop all Kidde Smoke Detectors here.

  • 120 Volt with AA battery backup
  • All interconnected alarms will sound when one alarm goes off
  • Intelligent multi sensor alarm
  • Peak level-alerts
  • Smart hush-silences the unit during nuisance alarm situations
  • *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
  • Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part KN-COSM-IBA



  • 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
  • Smoke and CO alarm requires hardwire installation
  • AA battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off
Hardwired 120 Volt Interconnected Combination Carbon Monoxide and Smoke Alarm provide 2 important safety devices in a single unit. The alarm includes a voice warning system that announces Fire, Carbon Monoxide, Low Battery or Smart Hush Activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. Shop all Kidde Smoke Detectors here.
  • 120 Volt with AA battery backup
  • All interconnected alarms will sound when one alarm goes off
  • Intelligent multi sensor alarm
  • Peak level-alerts
  • Smart hush-silences the unit during nuisance alarm situations
  • *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
  • Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part KN-COSM-IBA



  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Smoke and CO alarm requires hardwire installation
  • AA battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off
Model #: 21027519
Sku #: 1000535870
Internet #: 205711626

Hardwired 120 Volt Interconnected Combination Carbon Monoxide and Smoke Alarm provide 2 important safety devices in a single unit. The alarm includes a voice warning system that announces Fire, Carbon Monoxide, Low Battery or Smart Hush Activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. Shop all Kidde Smoke Detectors here.

  • 120 Volt with AA battery backup
  • All interconnected alarms will sound when one alarm goes off
  • Intelligent multi sensor alarm
  • Peak level-alerts
  • Smart hush-silences the unit during nuisance alarm situations
  • *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
  • Kidde offers a full range of 120V AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available. When any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning.
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part KN-COSM-IBA



  • 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.

Compare Similar

Compare Similar Products
Brand Kidde FireX Kidde Kidde
Name Code One Hardwire Smoke and Carbon Monoxide Combination Detector with AA Battery Backup and Voice Alarm Hardwire Smoke and Carbon Monoxide Combination Detector with 9V Battery Backup, Voice Alarm, and Photoelectric Sensor Hardwire Smoke and Carbon Monoxide Combination Detector with 9V Battery Backup, Voice Alarm, and Photoelectric Sensor Worry Free 10-Year Sealed Battery Smoke and Carbon Monoxide Combination Detector with Voice Alarm (2-pack)
Price
$49.97
$54.97
$54.97
$99.00 /bundle
Ratings (526) (903) (361) (626)
Power Source Hardwired Hardwired Hardwired Battery
Alarm Sensor Type Ionization Photoelectric Photoelectric Photoelectric
Alarm/Detector Features Battery Back-Up,Hush Feature,Interconnected,Voice Alert Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant,Voice Alert Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant,Voice Alert 10-Year Battery,Hush Feature,Tamper Resistant,Value Pack,Voice Alert
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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
Battery Back-Up,Hush Feature,Interconnected,Voice Alert
Battery Type Required
AA
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Hardwired
Returnable
90-Day
Voltage (volts)
120

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
Battery Back-Up,Hush Feature,Interconnected,Voice Alert
Battery Type Required
AA
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Hardwired
Returnable
90-Day
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
1-UL Listed

Questions & Answers

is there a special way to put in the aa batteries? I keep getting a low battery warning, with new...

is there a special way to put in the aa batteries? I keep getting a low battery warning, with new batteries.
Asked by: Larry
You MUST push the reset/test button after installing new batteries. That's the trick!
Answered by: Kutash
Date published: 2019-10-13

I think someone else answered this, but I want to be sure. I have the KN-COSM-IB model from sever...

I think someone else answered this, but I want to be sure. I have the KN-COSM-IB model from several years ago, and I want to replace it with a new version of the same model. Does the new version fit on the old mounting bracket, and does the new one's wiring fit with the old one's plug?
Asked by: WordGuy
Yes, all you need to do is plug it with the old connector and it should also mount with the old bracket.
Answered by: Larry
Date published: 2019-07-25

What type of 9 volt battery does a Kiddie detectors take?

What type of 9 volt battery does a Kiddie detectors take?
Asked by: Bob
they take a normal alkaline battery - HOWEVER I just replaced some with this model, and they now use 2 AA alkalines. I like that better.
Answered by: WillG
Date published: 2019-04-09

There's just take a 15 amp breaker or 20 amp breaker

Asked by: Boat25ft
All three of mine are powered off from a 15 amp dedicated breaker already pre-wired in my home.
Answered by: DIYer
Date published: 2018-07-13
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Customer Reviews

Kidde Code One Hardwire Smoke and Carbon Monoxide Combination Detector with AA Battery Backup and Voice Alarm is rated 4.6 out of 5 by 523.
Rated 4 out of 5 by from I would have preferred the alarm to allow Lithium batteries... I would have preferred the alarm to allow Lithium batteries so the batteries would not have to be changed as often as alkaline batteries.
Date published: 2019-10-01
Rated 5 out of 5 by from Good instructions, easy to install. Test alarm works good.... Good instructions, easy to install. Test alarm works good.
Date published: 2019-09-24
Rated 3 out of 5 by from Given it an average 3 stars since it takes a while to adequately form an opinion of this kind of ... Given it an average 3 stars since it takes a while to adequately form an opinion of this kind of product. Have not had any real life experience on how this alarm functions in a real smoke or CO alarm condition. One negative with this product is that it does not give a separate visual indication for smoke versus CO alarms, just audible alarms differentiate between the two. The main reason for selecting this product was that it uses AA batteries for backup. The products that use 9V backup battery have all gone to the slide-in friction contact (ie. without the plug in grommet for the battery terminals), and this has been very problematic because of the large variation in the physical size of different brands of 9V batteries, that can cause false alarms of annoying chirping even with a brand new fully charged 9V battery. Also decided against products using rechargeable lithium batteries for backup since this adds one more variable for a fire initiated by a misbehaving rechargeable lithium battery catching on fire).
Date published: 2018-12-28
Rated 3 out of 5 by from Ordered 3 of these two were installed with no issues. The third started beeping stating the batte... Ordered 3 of these two were installed with no issues. The third started beeping stating the batteries were dead even thou they were brand new batteries and tested Good. Returned that one and was shipped a replacement. Currently no issues with the replacement. The first order was received in 2 days the replacement order took 10 days Why??? Interest to see how long the batteries last because they are AA batteries the old version of this detector had 9 volt batteries.
Date published: 2019-10-08
Rated 1 out of 5 by from Battery backup is all night replacement feature. You can replace batteries dose not stop the beep... Battery backup is all night replacement feature. You can replace batteries dose not stop the beeping and low battery sounds. This happen two nights in a row. Replaced all batteries in all five the first night. Night #2 different alarm same low battery warning. Replace batteries again. No changes it’s 4:00 am still going off.
Date published: 2019-09-01
Rated 5 out of 5 by from Haven't had an alarm and hope I don't, but the assurance of having a warning system gives great p... Haven't had an alarm and hope I don't, but the assurance of having a warning system gives great peace. The unit was very easy to install\replace. Took 5 minutes at the most. System test is very loud so in the event of a fire or carbon monoxide, you will surely here this if you're asleep. Great price also. Would recommend.
Date published: 2019-09-19
Rated 2 out of 5 by from Opening the battery compartment door without any batteries inside results... Opening the battery compartment door without any batteries inside results in one of the red plastic levers getting stuck, forcing you to break it or try to 'bend' the cover in order to get it completely open. It seems to me that it was intentionally designed this way. OTHER BRANDS are much better...
Date published: 2019-10-01
Rated 5 out of 5 by from The unit was a perfect fit as promised. Since they... The unit was a perfect fit as promised. Since they were replacements there were no tools required, just a sturdy stepladder.The batteries are included .Just a warning; make sure the unit hasn’t been tampered with. I had to return one of the 6 I purchased when I realized that parts were missing
Date published: 2019-08-28
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