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  • Kidde KN-COSMXTR-BA Nighthawk Combination Carbon Monoxide and Smoke Intelligent Alarm
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Kidde KN-COSMXTR-BA Nighthawk Combination Carbon Monoxide and Smoke Intelligent Alarm

by Kidde
| 21 answered questions

List Price: $77.05
Price: $47.10 & FREE Shipping
You Save: $29.95 (39%)
In Stock.
Ships from and sold by BEST BUY DEALS.
1 Pack
  • Voice alarm, announces hazard type detected helping to speed up correct reaction to hazard detected
  • Combined carbon monoxide and smoke alarm, single unit can be installed instead of two, reducing installation time
  • Test reset button tests alarm circuitry and triggers voice announcement, flashing green and flashing red LEDs
  • Low battery condition announcement initiates alarm chirp and flashing red LED activation
  • Battery powered, provides protection even during power outages
See more product details
9 new from $42.00 1 used from $29.99

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Frequently Bought Together

Kidde KN-COSMXTR-BA Nighthawk Combination Carbon Monoxide and Smoke Intelligent Alarm + First Alert SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm + Kidde FA110 Multi Purpose Fire Extinguisher 1A10BC
Price for all three: $91.53

These items are shipped from and sold by different sellers.

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Size Name: 1 Pack
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Product Information

Size Name: 1 Pack
Technical Details
Part Number KN-COSM-XRT-B
Item Weight6.6 ounces
Product Dimensions2.1 x 8 x 11.2 inches
Item model numberKN-COSMXTR-BA
Size1 Pack
ColorWhite
Power Sourcebattery-powered
Item Package Quantity1
Batteries Included?Yes
Batteries Required?Yes
  
Additional Information
ASINB003Z4JJX2
Best Sellers Rank #3,828 in Home Improvement (See top 100)
Shipping Weight8 ounces (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableAugust 17, 2010
  
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Product Description

Size Name: 1 Pack

Amazon.com

Offering breakthrough technology to provide maximum protection for your family, the Kidde KN-COSM-XTR-BA intelligent alarm combines fire, smoke, and carbon monoxide (CO) alarms into a single device. And more than just beeping alerts, the KN-COSM-XTR-BA provides voice warnings that clearly state the present danger-- announcing either "Fire! Fire!" or "Warning! Carbon Monoxide!" And if you don't currently have a CO detector, it's never been a better time to add one as an increasing number of state and local governments are passing legislation that will require one in your home.

Kidde KN-COSM-XTR-BA
Combines fire, smoke, and carbon monoxide into a single device.
At a Glance
Kidde KN-COSM-XTR-BA
Intelligent Alarm
At a Glance:
  • Combined carbon monoxide and smoke alarm

  • Voice alarm announces hazard type (either "Fire! Fire!" or "Warning! Carbon monoxide!")

  • Two flashing LEDs--green for normal operation, red for alarm

  • Powered by two AA batteries

  • Ten-year limited warranty
At a Glance

 

Features

The KN-COSM-XTR-BA intelligent alarm offers a fast response to real fires, including smoldering and fast-flaming, as well as protects you from carbon monoxide. The intelligent alarm combines the detection capabilities of an ionization smoke sensor--which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires--with those of an electrochemical sensor, which is used to detect CO. Since carbon monoxide is present in all fires, having both detection chambers work together is ideal.

When either sensor notices a potential hazard, it communicates with the other. Depending on what is detected, the alarm adjusts its smoke sensitivity in order to better discriminate between a real hazard and a false one. If fire is detected, a red LED flashes while three long beeps are sounded, followed by a verbal warning message of "Fire! Fire!" If carbon monoxide is detected, four short alarm beeps sound, followed by a voice alert of "Warning! Carbon monoxide!"

Other features include a low-battery warning, a hush feature that silences nuisance alarms, a test/reset button, and a peak CO level memory. It's powered by two AA batteries, and it's backed by a ten-year limited warranty.

What's in the Box

One Kidde KN-COSM-XTR-BA intelligent alarm, three AA batteries, operating instructions.

 

From the Manufacturer

The Kidde KN-COSM-XTR-BA uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protecting you from carbon monoxide and dramatically reducing the chance of nuisance alarms. In addition, this intelligent alarm contains a voice warning that clearly states the present danger, smoke or carbon monoxide, and announces “Fire! Fire!” or “Warning Carbon Monoxide.” It combines the detection capabilities of an ionization smoke sensor which is more likely to detect smaller, less visible fire particles, like those produced by flaming fires with that of an electrochemical sensor, which is used to detect CO. Since carbon monoxide is present in all fires, having both detection chambers work together in one alarm is a breakthrough in the fire safety industry. When either sensor notices a potential hazard, it will communicate with the other. Depending on what is detected, the alarm will adjust its smoke sensitivity in order to better discriminate between a real hazard and a false one. This constant communication enhances the alarm's overall performance in all fires, and significantly reduces the potential for a nuisance alarm.

Customer Questions & Answers

Customer Reviews

Was very easy to install.
KS
The voice alarms are pretty loud (which I think is a good thing).
Doug
Hope I never really need to know if it works!
Trek

Most Helpful Customer Reviews

184 of 190 people found the following review helpful By Peter on January 28, 2011
Size Name: 1 Pack
When I first bought my house, a friend of mine recommended replacing all my smoke detectors with smoke and carbon monoxide detectors. Smartly, I took his advise and replaced all of them with these.

A couple years later, one evening, my daughter was in bed and me and my wife was just about to head to bed the Kidde detector starts yelling, "Warning - Carbon Monoxide".

Freaked me out. Got everyone out of the house and called 911. Fire department came out and shut the gas off to the appliances and cleared the house. It turned out to be the gas water heater which needed a little maintenance.

It scares me to think of what could have happened if I didn't have this Smoke/Carbon Monoxide detector.

So, I highly recommend this detector for everyone. Really, just get it...
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Size Name: 1 Pack
This review is from: Kidde KN-COSM-B Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking Alarm (Tools & Hardware)

I've installed installed two of these Kidde brand combination smoke and carbon monoxide detectors in my elder parents home. I have one in my own home as well and have found them all to be reliable and trouble free.

What attracted me to this model were its many features:

First, it has a low profile, attractive and unobtrusive design.

Second and perhaps most important, it has a voice speaking function that, in addition to the 85db alert horn, will speak out clear warnings: "FIRE, FIRE" or "DANGER: CARBON MONOXIDE". I think that this feature is a terrific addition toward modern life-safety technology. Indeed, you will likely see more voice warning devices in the near future.

We rely on these detectors to warn us, especially at night when we are sleeping. Awakening to this detector from a deep sleep helps orient you quickly by telling you the specific danger -- clearly and unmistakably. Notably, recent studies have shown that children can sleep through traditional smoke detector alarms, but will respond to voice warnings -- which this unit provides. Thus, placed in or near bedrooms this device can be a true lifesaver.

Another favorite feature is ease of installation. It was a breeze and truly could not be simpler. A screwriver is all you need. A small power drill/driver would speed the process, but is not necessary. Two screws into the ceiling or wall and you are done with the mounting bracket. The detector then just clicks in to place with a clockwise flick of the wrist. This is a do-it-yourselfer's dream. It doesn't get any easier!
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45 of 48 people found the following review helpful By M. Scholz on August 30, 2011
Size Name: 1 Pack Verified Purchase
I am a rental owner and recently purchased these units to comply with the Carbon Monoxide detection mandates. Having read comments from others, I based my purchase decision on the following criteria (in order of importance): accuracy, ease of use for my tenants, and price. I was most worried about false or missed alarms. Reading the reviews, these seemed the most reliable for the price. The ease of use is simple: The voice says "FIRE", it's detected smoke; the voice says "CARBON MONOXIDE", it's detect CO. Given folks may not be thinking clearly in the event of either, it takes the second guessing out of false alarms or why an alarm would alert if there's no smoke. Although a little on the higher side, I thought the price was reasonable given the Amazon discount.

About these detectors: They are operate on 3 AA batteries (recommend changing-out annually) and are extremely easy to install. If you have the least bit of inclination and an cordless drill, I'd recommend you tackle the installation yourself (two anchor screws and you're done). If you don't have a cordless drill, buy-one for a fraction of the cost savings of not paying for them to be installed. Place one unit in each room (I prefer above the doorway) and one on each side of the hallway.

These units are not networked (meaning if one alarms, it doesn't trigger the others). I opted out of getting networked detectors (although it seems like a good idea) based on concerns of false triggers (reports of one or more bad units shipped that set off the entire array of detectors; one guy claimed his tv remote set off his wireless units). I figure the bugs (if any) will be worked out by the time I need replacements.
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18 of 18 people found the following review helpful By NLee the Engineer HALL OF FAMETOP 50 REVIEWER on March 20, 2013
Size Name: 1 Pack
I bought a Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm last year, since one of my old carbon monoxide alarms started 'chirping' (due to end-of-life). So far the Kidde alarm seems to work really well without any false-alarm. Of course, as with any safety devices, you never know it actually works until something BAD happens. So it is more for "peace of mind" than anything else.

The 'Talking Alarm' feature is a great help because it makes the device so much easier to use than any of my previous detectors. For example, once I inserted three AA batteries, the device goes through the test procedure, by saying
"Testing"
"Fire, Fire"
"Warning, Carbon Monoxide"

As the battery voltage gets too low, the device will actually say "Low battery". That means there's no need to dig up the product manual and struggle to read the tiny prints, in order to understand the meaning between 'long beep' or 'short beeps', and so on.

If you don't have all three AA batteries installed, a safety latch prevents the device to be mounted to the base plate. This is a good safty feature, since it prevents people from simply hanging an alarm on the ceiling without batteries inside.

The battery consumption is very low. I measured 0.10mA in standby. An alkaline AA battery has a rated capacity of around 3000mAh in light load. So a set of 3 AA alkaline cells should last for 30,000 hours, or over 3 years. By the way, all carbon monoxide detectors have a built-in termination date of around 7 years (something to do with the half life of the radioactive isotope in the detector).
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