0047871074501

Kidde

Model KN-COSM-XTR-BA

Internet #202026789

Store SKU #622269

Store SO SKU #198092

Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert

$38.97 /each
  • Combo Smoke and CO detector
  • Easy to install / setup
  • Alarm has two methods of warning for danger

Frequently Bought Together

Product Overview

Intelligent combination alarm offers you and your family protection from fire and carbon monoxide. The intelligent combination alarm uses breakthrough technology to offer a fast response to real fires, including smoldering and fast-flaming, as well as protect you and your family from carbon monoxide. Voice warning alerts you to the type of danger present. 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 that of an electro-chemical sensor, which is used to detect CO. 10 Year Warranty.

  • Provides protection from smoke and carbon monoxide in one device
  • Voice alarm announces the hazard "Warning, carbon monoxide" or fire, fire, fire
  • Test/reset button checks the unit's functionality and hush false alarms
  • Hush mode activated and hush mode cancelled voice announcement
  • Battery safe guard, unit cannot be mounted without batteries installed
  • Low-battery warning alerts you when the battery needs replacing
  • Alarm had detected a CO level of 100 ppm or higher, the unit will announce carbon monoxide previously detected to warn of the CO incident, when the test/reset button is pressed
  • Available in a 2 pack THD online 204830114
  • Replace with Kidde AA battery model# 21025831
  • Product not available for sale in the state of California





  • Click here for more information on Electronic Recycling Programs

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Customer Questions & Answers

19 Questions30 Answers

Customer Questions & Answers

Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert
Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert

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1 answer

Compatible with Firex i4618 bracket?

This question is from Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert
Asked by
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July 29, 2016
We are replacing smoke alarms with CO combos. Will this fit in the Firex i4618 harness?
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Answer (1)

August 1, 2016
Answer: 
Hello Kenmore. No. The current Kidde and Firex-Kidde hardwired alarms are not compatible with your current hardwired alarms. The old alarms can not be used with any new alarms and any new alarm will have a different bracket and wiring harness plug. Also, this alarm you have chosen is battery only and not a hardwired alarm. We would recommend the I12010SCO, model 21010408-N. We are Kidde Product Read More
Hello Kenmore. No. The current Kidde and Firex-Kidde hardwired alarms are not compatible with your current hardwired alarms. The old alarms can not be used with any new alarms and any new alarm will have a different bracket and wiring harness plug. Also, this alarm you have chosen is battery only and not a hardwired alarm. We would recommend the I12010SCO, model 21010408-N. We are Kidde Product Support at 1-800-880-6788. Read Less
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2 answers

Is the base of this model compatible with Kidde KN-COSM-B? Don't want to have to reinstall base. Thank you.

This question is from Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert
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New York
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July 23, 2016
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Answers (2)

July 25, 2016
Answer: 
Hello Terriermom. Yes, the bracket for the KN-COSM-B and the bracket for this KN-COSM-XTR-BA is the same bracket. You can use the old bracket with this new alarm. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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Asked by
New York
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July 24, 2016
Answer: 
Never
mind, got it today in store and it fits the old base perfectly!
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1 answer

Can it be installed in a wall without affecting functionality?

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June 21, 2016
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June 22, 2016
Answer: 
Hello Christian. Ceiling mounting is preferred in ordinary residential construction. If the ceiling is flat and not sloped, then you can install the alarm on the wall in certain places. If installing the alarm on the wall, use an inside wall with the top edge of the alarm at a minimum of 4”(10cm) and a maximum of 12” (30.5cm) below the ceiling. We are Kidde Product Support at 1-800-880-6788. Thank you Read More
Hello Christian. Ceiling mounting is preferred in ordinary residential construction. If the ceiling is flat and not sloped, then you can install the alarm on the wall in certain places. If installing the alarm on the wall, use an inside wall with the top edge of the alarm at a minimum of 4”(10cm) and a maximum of 12” (30.5cm) below the ceiling. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest. Read Less
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1 answer

What is the difference between the KN-COSM-XTR-BA and the KN-COSM-BA?

This question is from Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert
Asked by
San Diego CA
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June 9, 2016
Kiddie's website and other retailers' websites have been unsuccessful in providing specific details as to the differences between the two models. With the XTR version being a little more expensive, I would like to know the real world differences.
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June 10, 2016
Answer: 
Hello Mike. The KN-COSM-BA has a 7 year warranty and the KN-COSM-XTR-BA has a 10 year warranty. Both have technology to help avoid nuisance alarms and both can be used for up to 10 years. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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Customer Reviews

Rated 4.5 out of 5 by 159 reviewers.
Rated 4.0 out of 5.0 by One out of two ain't bad No problem with the product. However, I had ordered two of them online, only to find that one was defective (broken battery contact). This necessitated my having to go to the store for an exchange, which is exactly what I was hoping to avoid by ordering online! June 21, 2016
Rated 5.0 out of 5.0 by Excellent product My last one lasted as long as it should have, something like 8 or 10 years. And then started chirping. Very pleased with the new alarm. Tested it and it worked fine. The best part is, I was able to pop off the old Kidde alarm and pop on the new one without having to install the base, saving me some difficulty. March 22, 2016
Rated 5.0 out of 5.0 by Fabulous product ! This product was my first choice when shopping for a replacement. The price was reasonable, the style was sleek. The color is a neutral white which blends with any wall color. Easy installation, comes with batteries and screws. The voice activation is an added feature and is an exceptional idea in emergency circumstances. I rate this product five stars! I have bought six for my entire apartment building! June 17, 2014
Rated 5.0 out of 5.0 by This product is easy to install. I purchased this product to replace an expired smoke detector in a family room containing a fire place. This unit was very easy to install with basic tools found in any home and has a front panel that makes battery replacement a snap. The unit is neutral color and blends in well. It does not give false alarms as many units I have owned in the past did. I highly recommend this unit. March 18, 2014
Rated 4.0 out of 5.0 by A peace of mind for fire and carbon monoxide Easy to install and I feel better knowing that my wife and I are protected January 14, 2014
Rated 5.0 out of 5.0 by Kidde CO/Fire works perfectly! I replaced my Kidde CO/fire alarms after I had a CO problem in my apartment. Woke me up (loudly) when I was sleeping and the alarm system made sure I was safe! Excellent product. The voice alarm for which aspect is alarming is very useful since I was feeling pretty disorientated. Only good things to say about this! August 11, 2013
Rated 5.0 out of 5.0 by Good smoke & Carb detector Very easy to install and lithium batteries will last 10 years. January 5, 2016
Rated 5.0 out of 5.0 by CO/Smoke Detector A twofer and easy to install. Seems like a good product to me. December 8, 2015
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