Internet #100004653

Model #21029509

Store SKU #146852

Code One Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice Alarm

  • 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
  • See More Details

Frequently Bought Together

+
+
Price:
$3003

Product Overview

Ten years, zero worries, Kidde 10-Year Worry-Free smoke, and carbon monoxide alarms

10-Year Worry-Free by Kidde

Ten years. No battery changes. Zero worries.

Advanced alarms, Kidde FireX smoke, and carbon monoxide

FireX by Kidde

Install confidence with advanced alarms from a world leader in fire safety.

Home fire safety basics, Kidde Code One smoke, and carbon monoxide alarms

Code One by Kidde

Cover the basics of home fire safety.

Identify current power situation, choose the right smoke and carbon monoxide alarm

Know Your Power Source

Identifying your current power situation is an essential step in choosing the right alarm for each room.

No wires, smoke and carbon monoxide alarms run only on batteries

Battery-Powered Alarms

No wires – runs only on batteries. Easy to install. Works during a power outage.

Smoke and carbon monoxide alarms run on your home's electricity, battery backup during outages

Hardwired Alarms

Runs on your home’s electricity. Includes battery backup for protection during power outages.

Kidde recommended smoke and carbon monoxide alarm placement

Product Placement

Recommended placement for combination alarms.

Protect your family, choose the right smoke and carbon monoxide alarm features

Protect Your Family

Protect your family and home. Choose the right features on your alarms.

Eliminates late-night smoke and carbon monoxide alarm battery chirps, $40 in savings

10-Year Longlife

No more late-night battery chirps! Save up to $40 over the life of the alarm.

Smoke and carbon monoxide alarm voice alert, announces danger

Voice Alarm

Voice alert and loud alarm announce danger.

Wireless interconnect, triggers each connected smoke and carbon monoxide alarm

Wireless Interconnect

Wire-free or hardwire interconnect triggers each connected alarm once smoke is detected.

Identifies current state of smoke and carbon monoxide alarm

Ambient Light Ring

Easily identify the current state of the alarm.

Replace smoke and carbon monoxide alarm battery easily, no removal necessary

Front Battery Door

Easily replace the battery without taking the alarm down.

The Kidde KN COSM BA Combination Carbon Monoxide and Smoke Alarm provide two important safety devices in a single unit. This alarm includes a voice warning system that announces "Fire, Carbon Monoxide, Low Battery and 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.
  • Alarm uses ionization sensing technology
  • Voice alert announces the type of hazard; ideal for bedrooms
  • Easy to install alarm that is suitable for all areas of the home and has a 7 year limited warranty
  • Combined carbon monoxide and smoke alarm - single unit can be installed where previously, two were needed
  • Low battery warning - the unit warns of a low battery condition by announcing "low battery
  • Hush feature - temporarily silences nuisance alarms
  • Battery Included
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • Note: product may vary by store
  • Add a Kidde Fire Extinguisher to complete your Fire Safe Home
  • *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



  • 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 Smoke and Carbon Monoxide Detectors

Code One Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Warning
current product
Code One Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice Alarm
Firex Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice Alarm10 Year Worry-Free Sealed Battery Combination Smoke and Carbon Monoxide Detector with Photoelectric Sensor
BrandKiddeKiddeKiddeKidde
NameCode One Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice WarningCode One Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice AlarmFirex Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice Alarm10 Year Worry-Free Sealed Battery Combination Smoke and Carbon Monoxide Detector with Photoelectric Sensor
Price
$2997
$3003
$3363
$4997
Ratings
(261)
(538)
(862)
(862)
Power SourceBatteryBatteryBatteryBattery
Alarm/Detector FeaturesHush Feature,Voice AlertHush Feature,Voice AlertHush Feature,Voice Alert10-Year Battery,Hush Feature,Tamper Resistant
Pack Size1111
Alarm Sensor TypeIonizationIonizationIonizationPhotoelectric
Alarm TypeCarbon Monoxide,SmokeCarbon Monoxide,SmokeCarbon Monoxide,SmokeCarbon Monoxide,Smoke
Battery Type RequiredAAAAAA.Built-In
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
5.75
Product Height (in.)
1.7
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
Commercial/Residential
Residential
Connector/Contact Type
None
Fixed or portable
Fixed
Included
Batteries
Pack Size
1
Power Source
Battery
Returnable
180-Day
Voltage (volts)
4.5

Warranty / Certifications

Certifications and Listings
UL Listed

Questions & Answers

69Questions30Answers

Do these have cameras in them

Asked by Mel8597 January 24, 2021
5
Answers

No

Can you use AA alkaline batteries in this combination alarm?

Asked by Me January 22, 2021
2
Answers

Hello Me, We recommend Alkaline Energizer batteries.

Will this product work well in a Class B RV?

Asked by RVer October 12, 2020
2
Answers

Hello RVer, This is not rated for an RV. It is a residential unit only.

Is this battery operated?

Asked by Fudge82 September 27, 2020
4
Answers

Hello. Yes. This alarm is battery-operated and is not hardwired.

How long, on average, will the batteries last? Am I changing them monthly, yearly, or every 10 years?

Asked by Matt September 16, 2020
4
Answers

Just like any smoke or CO detector, you should change batteries two times a year. A good way to remember is to change them is during time changes in the spring and the fall. The battery is very easy to change. I can honestly say: This detector saved my life by alerting me to a dangerously high CO amount in my house years ago. I recommend it!

Which model can replace KN-COSM- IBCA

Asked by Raja August 19, 2020
2
Answers

Sorry, not sure. I would contact Kiddee.

How many batteries it needs and what size?

Asked by Raquel July 17, 2020
3
Answers

Here's a third different answer. If you do a closeup of the packaging picture, it says 3-AA batteries.

Can the chirp be silenced and the unit kept on voice? The chirp drives my dogs into an anxiety attack and placing these units in an RV often leads to

Asked by Luis June 23, 2020
3
Answers

No, chirp is required as the number of chirps is different depending on if it is a carbon monoxide or smoke alarm and goes with the voice alert for each type. Check out the owners manual for more Information.

Will this unit fit onto an already installed mounting bracket for a Kidde Model KN-COSMXTR-B? Th...

Asked by SUE July 18, 2019
4
Answers

Wish I could help you but don’t know. I think if you call Kiddie customer service they would know. Good luck!

description said use 4.5V (3 batters). Why include 4 batters?

Asked by nickname1 May 29, 2019
1
Answer

Hello. This alarm takes 2 AA Energizer or Kidde brand alkaline batteries to run. This bundle comes with the smoke alarm and an extra pack of 4 Kidde AA alkaline batteries for replacements. The batteries should be replaced every 6 months to a year..

Code One Battery Operated Combination Smoke and Carbon Monoxide Detector with Ionization Sensor and Voice Alarm - page 2

Customer Reviews

  • 4.6
    out of 539 reviews
  • 90% recommend this product
5star-icon395
4star-icon93
3star-icon22
2star-icon5
1star-icon24
Filter by:
Showing 1-10 of 539 reviews
Great 2 in 1 alarm product for home.
Great product, easy to install with instructions. My home was pre-wired for this alarm in 3 areas but instructions are clear & easy to follow. If unsure, seek an electrician. Safety of your loved ones is worth the price!
by A Baloch
1 year and ~5 times of handling and now it's hanging from the ceiling by its wires. 2 ears that h...
1 year and ~5 times of handling and now it's hanging from the ceiling by its wires. 2 ears that hold the unit into the base broke off. When I went to put it back onto the base this morning, the other 2 ears fell off on the floor. So now it won't stay mounted on the ceiling. Did I mention, 1 year and 5 times? Clearly not designed or manufactured for its use environment. What kind of quality is that?
by SomeGuyInOR
Response from Kidde ExpertJul 20, 2018
Hello SomeGuyInOR,
We apologize for the difficulties and would encourage you to contact product support 800 880 6788
Simple to install: installed three in less that an hour. All warn simultaneously when a smoke o...
Simple to install: installed three in less that an hour. All warn simultaneously when a smoke or CO risk is detected at any single unit plus there is an an audible (voice) so the risk is identified by name (no guessing what the reason might be for the alarm). Money well spent: previous units were more than 10 years old: experts recommend time to replace. These new and upgraded units installed right into the old mounting locations.
by Genius4sinkreplacement
1 person found this helpful
Half the price or less than others and just as good Excellent Will buy more for RV park and BnB s
Half the price or less than others and just as good Excellent Will buy more for RV park and BnB s
by BubbaDude
2 people found this helpful
Works great. Best price on market. Easy to install and is very loud.
Works great. Best price on market. Easy to install and is very loud.
by Paul
2 people found this helpful
Here she is, just hanging there looking pretty and blinking at me with her beautiful red LED ever...
Here she is, just hanging there looking pretty and blinking at me with her beautiful red LED every 60 seconds to let me know that she's checking for smoke and CO... she's mesmerizing, and has provided hours of entertainment so far! And if you ever get lonely and bored, just push her test button for some extra excitement as she will speak to you/beep at you. Though, I must say, she's not much of a conversationalist, as she just repeats the same rather monotone phrases ("Warning, smoke detected"; "Warning, carbon monoxide detected") over and over with beeps in between. I think she's hard of hearing because she speaks/beeps loudly and doesn't respond to verbal input. I'm going to have to deduct her one point due to the lack meaningful conversation; oh, and due to the fact that her sensor has only about a 7-year life, thus requiring periodic replacement. I'd prefer a longer term relationship. She is, however, relatively low maintenance and low cost with just periodic battery replacement (2 AA) which is a characteristic I like that in a lady. She replaces my previous Kidde smoke & CO detector, which conveniently let me know she needed replaced in the middle of the night with incessant beeping (she will also let you know in the middle of the night when her batteries need replaced). I'd prefer more traditional "honey-do list" left for me on the frig or the kitchen counter in the morning, but seeing as she doesn't have hands, I'd settle for a note sent via e-mail or text. I do like the fact that this newer model has access to battery compartment from the front of the unit; no need to remove it from the wall.
by MTB
49 people found this helpful
excellent fire and carbon monoxide talking alarm
This excellent fire and carbon monoxide talking alarm is easy to install and batteries last more than a year, it is a must to have if you care about fire or carbon monoxide inside your dwelling. Two years ago after a city inspection recommendation, I installed two in my unit and now installing 3 more in other units.
by jnm2036
7 people found this helpful
You need this! Your life may depend on it!
One unit serves 2 functions! Fire or CO means alarm! Get out! Put in the battery. Simple to mount. Save the lives of your loved ones. Can't beat that!
by Bill
6 people found this helpful
Makes me feel safer
I have a condo and I saw on the news where some people lost their life from Carbon Monoxide in a building similar to mine. It immediately dawned on me that I should get a Carbon Monoxide alarm. For a minimal cost, I think it is worth the potential life saving benefit and with the Smoke Alarm built in, the value is increased even more.
by richrjr
5 people found this helpful
Great Purchase
This detector makes it easier to change the batteries. The battery department is now located on the face. I don't have to take the whole thing down. I also like it having a carbon monoxide alarm. Two alert in one saves ceiling space. I had one previously, over 5 years, and it just started alarming. I changed the batteries, but that did not stop it. I replaced the old one with a new one and everything worked out fine.
by Kimmy
9 people found this helpful
Showing 1-10 of 539 reviews