Internet #205133645

Model #21027448

Battery Operated Smoke and Carbon Monoxide Combination Detector with Wire-Free Interconnect and Voice Alarm (3-pack)

  • Battery-operated Smoke and CO Alarm (batteries included)
  • Alarms feature wire-free interconnectivity via radio frequency
  • Compatible with Wink hub and app (sold separately)
  • See More Details

Frequently Bought Together

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Price:
$14991

Product Overview

Seal your home with the safety of the Kidde battery-operated combination smoke and carbon monoxide alarms. Install them outside of each sleeping area and on every level of your home to alert you of potential smoke or carbon monoxide elevated levels. This system is wire-free and connects with other Kidde KN-COSM-B-RF units. There is no need for expensive rewiring and they are great to be installed in detached garages or workshops. They require the use of 3 AA batteries.
  • Powered by 3 AA alkaline batteries for continuous protection, even during power outages
  • Wire-free interconnection activates all connected alarms
  • Voice alert tells user to if the battery is low
  • Voice alarm announces "Fire! Fire! Fire!", when a smoke or fire hazard is detected and announces "warning! carbon monoxide" when a CO hazard is detected
  • Smart touch button temporarily silences nuisance alarms, low battery chirps, and tests the operation of the unit and interconnected units
  • Internal timer reminds you to replace your unit after 10 years to ensure the most reliable protection
  • Ionization sensor may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms
  • Interconnect is not required; this alarm also functions as a stand-alone Smoke and Carbon Monoxide detector
  • 10-year limited warranty
  • Smoke and carbon monoxide detectors utilize an ionization sensor to detect fire hazards and sound an 85 db alarm when a hazard is detected
  • UL/CSFM Ref. Kidde Part KN-COSM-B-RF
  • 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.






Info & Guides

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Price
$14991
/bundle
$14991
/bundle
$17960
/bundle
$31039
Ratings
(653)
(530)
(651)
(3923)
Power SourceBatteryHardwiredHardwiredBattery
Alarm/Detector FeaturesHush Feature,Interconnected,Value Pack,Voice Alert,Wire-free InterconnectBattery Back-Up,Hush Feature,Interconnected,Value Pack,Voice Alert10-Year Battery,Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant,Value Pack,Voice AlertHush Feature,Wi-Fi Enabled
Pack Size3333
Alarm Sensor TypeIonizationPhotoelectricIonizationDual-Sensor
Alarm TypeCarbon Monoxide,SmokeCarbon Monoxide,SmokeCarbon Monoxide,SmokeCarbon Monoxide,Smoke
Battery Type RequiredAAAA.Built-InAA
Smart Home Smart Home Enabled
Smart Home Protocol Bluetooth,Wi-Fi
Works With Control4, Google Assistant, Logitech Harmony, Lutron, Nexia, Vera
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Specifications

Dimensions

Product Depth (in.)
5.7
Product Height (in.)
1.75
Product Width (in.)
5.7

Details

Alarm Sensor Type
Ionization
Alarm Type
Carbon Monoxide,Smoke
Alarm/Detector Features
Hush Feature,Interconnected,Value Pack,Voice Alert,Wire-free Interconnect
Battery Type Required
AA
Commercial/Residential
Residential
Connector/Contact Type
None
Fixed or portable
Fixed
Included
Batteries
Pack Size
3
Power Source
Battery
Returnable
180-Day
Voltage (volts)
4.5

Warranty / Certifications

Certifications and Listings
UL Listed

Questions & Answers

196Questions39Answers

Mounting plate

Asked by Andrew June 17, 2020
3
Answers

Hello. This model will not fit onto an electrical box. However, we do have the wireless P4010DCSCO-W, part number 21027680 that is wireless and has a bracket that will fit onto an electrical box. Please note that these two alarms do not work together.

What’s the model number

Asked by Dwayne May 21, 2020
5
Answers

Kidde KN-COSM-B-RF is the individual unit. You can have up to 12 units that will link to each other and alert for smoke or co2

Will this device work with any other smart hub? It appears Wink has been struggling lately and is...

Asked by Brian May 13, 2020
3
Answers

This is an interconnect device that interacts with other Kidde. It is for installation where wire interconnect is not possible. Whether it will reach out to other services or your wireless hub you would have to contact Kidde and discuss with them.

Is it Compatible with the Ring Alarm home security?

Asked by Rosie May 2, 2020
4
Answers

I don't think so it uses a different signal not wifi

Will these work with "Ring" Home security hub?

Asked by Doug December 28, 2019
2
Answers

No, will not work with Ring. Will work with Wink hub.

Can they be wall mounted?

Asked by Broskizzle November 19, 2019
5
Answers

Yes, I have 2 mounted to the ceiling and the third on a wall. With one screw, you attach a small circular plastic piece to the ceiling or wall. Then press and almost screw on the detector unit to that plastic piece. Easy installation

i have two . How do i change the battery??

Asked by Jo November 9, 2019
5
Answers

Remove from ceiling. Open battery door. Remove old batteries. Install new batteries. Replace on ceiling

Can I use rechargeable batteries

Asked by Donald September 30, 2019
4
Answers

Hello Donald, No. These units will need energizer alkaline batteries with a "use by" date of 2024 and beyond. Anything else can damage the unit.

Is this interconnect alarm compatible with another kidde combo alarms?

Asked by Annette September 20, 2019
3
Answers

Hello Annette, This will only work with other kidde units with the same model.

are they connected to a smart phone

Asked by Chef0619 July 24, 2019
5
Answers

No, they are not connected to a SMART PHONE. They signal each other. Within 2 seconds of the downstairs alarms activating, the upstairs alarms sound. The devices signal with an alarm plus a voice stating whether it is fire or carbon dioxide alert. The sound stops immediately when the source situation is remedied. A single unit will signal a voice alert for a low battery. Were you wanting an out-of-home signal to your phone?

Battery Operated Smoke and Carbon Monoxide Combination Detector with Wire-Free Interconnect and Voice Alarm (3-pack) - page 2

Customer Reviews

  • 653 Customer Reviews
  • 4.6 out of 5 stars overall
89% of customers recommended.
Overall Ratings
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No mounting bracket
I don't even know how these work, because we haven't been able to mount them. There is no little mounting bracket included, and judging by the other reviews, this is a frequent problem. If you want to buy this, put the batteries in, hang them up and be done - this is not your product. Now we're waiting for Kidde to send the brackets through the mail. Batteries are included, so there's that.
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Response from Kidde ExpertApril 21, 2020
Hello DeeGee,
Thank you for your input and we apologize that the mounts were not with the unit.
Simple install & wireless (not WiFi) interconnection works very well.
Simple install & wireless (not WiFi) interconnection works very well.
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Easy to set up! Glad I made the switch to these. They work together when activated. I even put on...
Easy to set up! Glad I made the switch to these. They work together when activated. I even put one in the garage in case something happens in there while were sleeping. If it detects smoke or carbon monoxide it will communicate with the one in the hall by our bedrooms to let us know!!!
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Easy to install and link together. They are very loud when they go off so I have no doubt I will ...
Easy to install and link together. They are very loud when they go off so I have no doubt I will wake up when they go off. When one goes off they all go off.
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These are a good product whether individual or "3-pack". The wireless connection was exactly wha...
These are a good product whether individual or "3-pack". The wireless connection was exactly what we needed and these are on all 3 floors and connect without issue. Easy setup and install with one screw. Tested one set off, and it will set all 3 off. Which I think everyone needs because you are not going to hear an alarm 3 floors away while sleeping etc. Hoping that the technology does work in an actual event while sleeping, but I believe this is still the best bet (bang-for-buck) for safety. I still have all my other separate smoke and CO alars, and while I am not home, my Leeo device listens for alarms and calls me in an event. Do not mess around. For ~$100 (daily deal) it is worth it. Even regular price is worth saving a life and possibly a house/building.
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Easy to install and establish communication with 3 other Kidde Smoke and CO Alarms.
Easy to install and establish communication with 3 other Kidde Smoke and CO Alarms.
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Installed 8 of these in my home in the fall of 2016. All of them activated within seconds one tim...
Installed 8 of these in my home in the fall of 2016. All of them activated within seconds one time since then from kitchen smoke. They are loud and sensitive. The carbon monoxide detector has not activated yet and I hope it never does. Look for the 2 pack ($80) if purchasing these as opposed to $50 for a single unit. I feel good knowing these detectors are protecting my home. The batteries haven't been changed yet and no low battery indication so far. I will change them in all 8 units when the first one indicates such then annually after that. I highly recommend these to anyone replacing or a new install.
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Easy to set up and install. Now we are protected upstairs and downstairs no matter what alarm ac...
Easy to set up and install. Now we are protected upstairs and downstairs no matter what alarm activates!
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Setup was very simple. Testing went exactly as advertised. Pressing the test button on one unit m...
Setup was very simple. Testing went exactly as advertised. Pressing the test button on one unit made all units sound the alarms. Once installed in the house, the lit match test near one unit worked flawlessly. The unit detecting smoke sounded the alarm first and announced "fire detected". Immediately followed by all three other units giving the same alarm. I purchased 4 of these at one time to replace aging units. The price for the twin pack was quite low. Get some piece of mind and get these.
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This is a follow up review. I originally had issues with the first one of these I bought but Home...
This is a follow up review. I originally had issues with the first one of these I bought but Home Depot and Kidde were quick with solutions. I like being able to have a push notification go to my smartphone if an alarm is triggered. Also it is very easy to set up in Wink. If you have more than one of these connected to a single wink hub they all show up as one unit.
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