Brand | Kidde |
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Style | Previous Model |
Power Source | Battery Powered |
Color | White |
Product Dimensions | 1.8"D x 5.6"W x 5.6"H |
Item Weight | 0.8 Pounds |
Alarm | Audible |
Operating Humidity | 10% to 95% relative humidity, non-condensing |
Upper Temperature Rating | 37.8 Degrees Celsius |
Sensor Type | Ionization |
Manufacturer | Kidde Safety |
Part Number | 21026043 |
Item Weight | 12.8 ounces |
Country of Origin | China |
Item model number | KN-COSM-BA |
Batteries | 2 AA batteries required. (included) |
Is Discontinued By Manufacturer | No |
Size | 1 Pack |
Pattern | Detector |
Voltage | 3 Volts |
Item Package Quantity | 1 |
Certification | Certification & Standards - UL Listed, Standard 2034 |
Special Features | fire safety, ionization, battery powered, tamper-resistant |
Included Components | Kidde Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA |
Batteries Included? | Yes |
Batteries Required? | Yes |
Battery Cell Type | NiMH |
Warranty Description | 5-year limited warranty |
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Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm
Purchase options and add-ons
Brand | Kidde |
Style | Previous Model |
Power Source | Battery Powered |
Color | White |
Product Dimensions | 1.8"D x 5.6"W x 5.6"H |
Item Weight | 0.8 Pounds |
Alarm | Audible |
Operating Humidity | 10% to 95% relative humidity, non-condensing |
Upper Temperature Rating | 37.8 Degrees Celsius |
Sensor Type | Ionization |
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.
Customer ratings by feature
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From the manufacturer
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UL Certified
Kidde products go through extensive testing to be granted UL Certification for peace of mind.
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Sensor Types
There are 2 types of sensors that can be found in smoke alarms - ionization & photoelectric.
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Photoelectric
May detect visible fire particles associated with smoldering fires, ideal for kitchens.
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Ionization
May detect invisible particles associated with fast flaming fires, ideal for living areas.
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Product guides and documents
Videos
Videos for this product
1:32
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Kidde Smoke and CO Alarm - The Facts
🔷Blue Camelopard🦒
Videos for this product
2:02
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Customer Review: Easy Install. Safety First!
TroysHobbies
Videos for this product
2:36
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Kidde versus First Alert #thisorthat
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Product information
Technical Details
Additional Information
ASIN | B00PC5S0PA |
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Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #823 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #4 in Smoke & Carbon Monoxide Alarms |
Date First Available | June 17, 2014 |
Warranty & Support
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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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This Item Kidde Smoke & Carbon Monoxide Detector with Voice Alerts, Battery Powered, Combination Smoke & CO Alarm | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $74.71$74.71 | $39.98$39.98 | $44.94$44.94 | -8% $46.49$46.49 Typical: $50.41 | $48.99$48.99 | -8% $48.99$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
3 volts
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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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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.
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.