Amazon.com Product Description
Offering breakthrough technology to provide maximum protection for your family, the Kidde KN-COSM-XTR-B intelligent alarm combines fire, smoke, and carbon monoxide (CO) alarms into a single device. And more than just beeping alerts, the KN-COSM-XTR-B 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.
Combines fire, smoke, and carbon monoxide into a single device.
 | Kidde KN-COSM-XTR-B
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 three AA batteries
- Seven-year limited warranty
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Features
The KN-COSM-XTR-B 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 three AA batteries, and it's backed by a seven-year limited warranty.
What's in the Box
One Kidde KN-COSM-XTR-B intelligent alarm, three AA batteries, operating instructions.
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- 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
Customer Reviews
Average Customer Review
75 of 77 people found the following review helpful  This thing saved me and my Family's life, January 28, 2011 This review is from: Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm (Tools & Home Improvement) 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... Help other customers find the most helpful reviews Was this review helpful to you?  
86 of 92 people found the following review helpful An Excellent Combination Life-Safety Alarm that is a Good Choice As A Stand Alone or As Part of A Total Home Safety Alert Plan, August 24, 2010 This review is from: Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm (Tools & Home Improvement) 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... Read more Help other customers find the most helpful reviews Was this review helpful to you?
29 of 31 people found the following review helpful  Smoke Detector, December 23, 2010 This review is from: Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm (Tools & Home Improvement) The Kidde KN-COSM-XTR-B Intelligent Alarm, Combination Carbon Monoxide, Fire and Smoke detector is replacing a very similar Kidde alarm that finally died after several years of faithful service.
I looked at "First Alert" alarms as I have heard good things about them years ago (30 years ago), but after reading the reviews on First Alert alarms it became obvious that things have changed and there seemed to be some problems now with them. Apparently they are malfunctioning in a number of ways.
So I stuck with Kidde as it had served me well in the past, and purchased one very similar to the outgoing Kidde. The nice thing about doing that is that the new one fits on the old mount. All I had to do was put the batteries (included) in the new one and twist it onto the old mount and then enjoy the rest of my day! Life is good!
Pete Help other customers find the most helpful reviews Was this review helpful to you?
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