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Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm

4.6 4.6 out of 5 stars 34,556 ratings

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1 Pack
Previous Model

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About this item

  • 2 units in 1: unit alerts you to smoke & carbon monoxide by sounding a loud, 85-decibel alarm & sounding voice alerts
  • Ionization sensor technology senses invisible fire particles, while a electrochemical sensor detects CO gas
  • Voice Alarm & an 85-decibel alarm announces a hazard when detected: “Fire!” = smoke or fire or “Warning Carbon Monoxide” = CO gas, or "Replace Battery" when the battery needs to be replaced
  • Operates on 2-AA alkaline batteries, providing reliable detection during a power failure
  • Front-load battery door makes installation & replacement easy
  • Tamper-resistant design: deters removal of the carbon monoxide smoke detector combo from the ceiling
  • Test-Hush Button makes testing the detector or silencing false alarms easy (false alarms may occur from routine cooking, shower steam, dust or humidity)
  • UL listed with a 10-Year limited manufacturer warranty on the alarm only (not a battery performance claim). Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that replacement is needed.
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Customer ratings by feature

Easy to install
4.5 4.5
Noise level
4.4 4.4
Value for money
4.2 4.2
Battery life
4.2 4.2

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From the manufacturer

Kidde Smoke & Carbon Monoxide Detector
Kidde Smoke & Carbon Monoxide Detector
Kidde Smoke & Carbon Monoxide Detector

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Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please Click here [PDF ]

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Kidde

Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm


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Product Description

The Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm, model KN-COSM-BA, provides two fire safety detectors in one unit through the use of ionization sensing technology that senses invisible fire particles, while an electrochemical sensor detects carbon monoxide. When a smoke, fire, or carbon monoxide event occurs, the Kidde fire alarm warns with an 85-decibel alarm sound, flashing LEDs, and voice alerts. For smoke detection, the alarm will sound with the announcement, "Fire! Fire!" and a red LED will flash in unison with the voice alarm. For carbon monoxide detection, the alarm will sound with the announcement "Warning! Carbon Monoxide!". In the event of a low battery, the detector will announce, "Low Battery!" The Kidde combination smoke and carbon monoxide alarm is powered by 2-AA batteries, which provide coverage during a power failure. A convenient pop-up, front-door battery compartment allows for quick installation or replacement of a battery without having to disconnect the entire unit from the ceiling. In the case of nuisance or false alarm, the Smart Hush button silences the unit for approximately 8 minutes, which is helpful when this smoke detector carbon monoxide detector combo sounds from things like routine cooking or shower steam. When installed, the green LED on the alarm will flash every 60 seconds in standby condition, letting you know that the unit has power & is operating correctly. Install a carbon monoxide smoke detector combo on every level of your home and near bedrooms to help keep your family safe. UL Certified with a 10-year limited manufacturers' warranty. Meets requirements of UL 2034, UL217, NFPA72, (chapter 11 2002 edition) The State of California Fire Marshal, NFPA101 (One and two family dwellings) Federal Housing Authority (FHA), Housing and Urban Development (HUD).

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Price$74.71$39.98$44.94-8% $46.49
Typical:$50.41
$48.99-8% $48.99
Typical:$52.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to install
4.5
4.5
4.5
4.3
4.3
4.6
Battery life
4.2
4.2
4.8
4.0
3.9
5.0
Value for money
4.2
4.2
4.2
3.9
4.1
Tech Support
3.0
3.0
4.7
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
MYRKJ
Guangzhoujinxuanshangmaoyouxiangongsi
power source
Battery Powered
Battery Powered
Battery Powered
Hardwired
Battery Powered
Battery Powered
sensor type
Ionization
Photoelectric, Electrochemical
Electrochemical, Photoelectric
Electrochemical, Photoelectric
Photoelectric
Carbon Monoxide
lower temperature rate
40 degrees fahrenheit
40 degrees fahrenheit
40 degrees fahrenheit
40 degrees fahrenheit
0 degrees celsius
0 degrees celsius
upper temperature rate
37.8 degrees celsius
100 degrees fahrenheit
100 degrees fahrenheit
100 degrees fahrenheit
49 degrees celsius
49 degrees celsius
style
Previous Model
Updated Model
Detector
Decibel
Combination Smoke and Carbon Monoxide Detector Battery Operated,, bedroom and travel.
alarm
Audible
Combination Smoke and Carbon Monoxide Alarm
Smoke and Carbon Monoxide Alarm
Smoke and Carbon Monoxide Alarm
Audible
Audible
operating humidity
10% to 95% relative humidity, non-condensing
10%-95%
10%-95% relative humidity, non-condensing
10%-95% relative humidity, non-condensing
95 percent
95 percent

Important information

Bulb Voltage

3 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
34,556 global ratings

Customers say

Customers like the readability, ease of maintenance, and quality of the gas smoke fire alarm. They mention that it has a very good and understandable voice alert, and the manual and written materials are clearly written with excellent graphics. They appreciate the simple operation, and that it does not need to be reinstalled. Customers are also satisfied with value. That said, some complain about the return policy, saying that it's not returnable. Opinions are mixed on safety, battery life, and sound quality.

AI-generated from the text of customer reviews

1,624 customers mention1,180 positive444 negative

Customers like the quality of the gas smoke fire alarm. They say it works well, is very sensitive, and has tested well. Some say that it's perfect and has had no issues. Overall, most are satisfied with the product's quality.

"...It's both a CO and smoke detector, and has a unique raised portion I haven't seen in other models. I assume it will do a good job." Read more

"...I’ve had it for 2 months now, no issues." Read more

"...It may be a great item but no connection to other alarms so all sound simultaneously does not work with this item, be aware that it is also not..." Read more

"...Happy they came with batteries. And they tested well when my wood stove had a little back draft of smoke!" Read more

806 customers mention806 positive0 negative

Customers find the gas smoke fire alarm easy to install and operate. They appreciate the carbon monoxide sensor and the fact that it does not need to be reinstalled.

"Very easy to install, and has an alarm pitch that can wake the dead: I believe it's 85 db...." Read more

"These were so easy to install and get running. Happy they came with batteries...." Read more

"Easy to install. The voice volume is too low and not understandable for me, but I have bad hearing." Read more

"These new smoke and carbon monoxide detectors were simple to install...." Read more

421 customers mention368 positive53 negative

Customers like the value of the gas smoke fire alarm. They say it's definitely the right price and worth the money.

"Good quality product, fast delivery, good price" Read more

"Nice price looks good" Read more

"Ordering what I wanted was easy, price appropriate and received in timely matter." Read more

"I purchased a few of these last year at a great price. I changed the batteries and attempted to use Amazon AAs. The unit would not start...." Read more

104 customers mention94 positive10 negative

Customers find the voice instructions in the gas smoke fire alarm to be nice and understandable. They appreciate the clear and excellent graphics in the manual and written materials. Customers also say the test feature includes voice prompts, which is a nice technology improvement.

"Pro: instructions on where and how to mount it are clear and easy to do; battery testing and changing are simple...." Read more

"...It was helpful to read the instructions and learn that I'm not supposed to put the alarms within 36" of bathroom or kitchen door, for example...." Read more

"...I have high hopes for its seamless, transparent integration in our domestic lifestyle." Read more

"...I love the fact that it is voice activated and loud enough to wake me up, if I had to get up in the middle of the night...." Read more

419 customers mention203 positive216 negative

Customers are mixed about the sound quality of the gas smoke fire alarm. Some mention that the alarm is nice and loud, while the voice alert is worthlessly soft. The noise levels are good when testing the device, and it has a clear loud beep and warning message. However, others say that the voice on this alarm is not loud enough to be considered part of the warning. The alarm is going off for crying out loud!

"Very easy to install, and has an alarm pitch that can wake the dead: I believe it's 85 db...." Read more

"...It’s a bit on the loud side when it does go off, but aside from that, very happy with my purchase.I’ve had it for 2 months now, no issues." Read more

"Have used this brand for years. Long lasting battery, loud. Covers smoke and carbon monoxide in one product. Highly recommend!!" Read more

"Easy to install. The voice volume is too low and not understandable for me, but I have bad hearing." Read more

340 customers mention184 positive156 negative

Customers have mixed opinions about the battery life of the gas smoke fire alarm. Some mention that the batteries are always good inside, it comes with batteries, and can be replaced from the top. Others say that it complains about the batteries being low after a fresh pair, it started going through batteries every couple of days, and that it only takes certain batteries or it will not work.

"These were so easy to install and get running. Happy they came with batteries...." Read more

"Easy to install. The voice volume is too low and not understandable for me, but I have bad hearing." Read more

"Have used this brand for years. Long lasting battery, loud. Covers smoke and carbon monoxide in one product. Highly recommend!!" Read more

"...Con: they go through rechargeable batteries rapidly - two of our three detectors would chirp for new ones once a week...." Read more

106 customers mention55 positive51 negative

Customers are mixed about the safety of the gas smoke fire alarm. Some mention that it makes them feel safe, protects their family well, and is a great safety device. However, others say that it was functional, but it never once triggered from real smoke.

"Easy assemble. Makes us feel safe" Read more

"...Last night, one randomly sounded "Fire" at 6am. Fire was nowhere to be found. We reset and reseated the battery and got the same result...." Read more

"Security....important." Read more

"...It took longer than I'd like to sound the alarm. Plenty of smoke was reaching the unit...." Read more

99 customers mention0 positive99 negative

Customers are dissatisfied with the return policy of the gas smoke fire alarm. They mention that it's not returnable, impossible to return through Amazon, and the return process is unnecessarily difficult.

"...does not work with this item, be aware that it is also not returnable." Read more

"...(These are not returnable so I hope they work OK in the long term)...." Read more

"...THEN I discovered that these units are NONRETURNABLE. (Amazon did make it right with me.) I did put the batteries in one and test it...." Read more

"...And these are non-returnable, so I wasted my money" Read more

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Amazon Customer
5.0 out of 5 stars batteries
Reviewed in Canada on June 17, 2020
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vara
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Reviewed in Canada on August 2, 2020
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Myk K.
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Reviewed in Canada on February 21, 2020
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