Kidde KN-COSM-XTR-B Review


Other than having a home security system to protect your house from burglary, it is always a good practice to have a safety solution in place to ensure it has preservation from natural disaster. The Kidde KN-COSM-XTR-B Nighthawk combination Carbon Monoxide, fire and smoke intelligent alarm is exclusively design to alert you when smoke, CO (Carbon Monoxide) and fire is detected. This allows you to take immediate response in case of any crisis.

Click Here To See What Others Are Saying About Kidde KN-COSM-XTR-B CO and Smoke Intelligent Alarm



  • 2 in 1 Carbon Monoxide and Smoke Detector
  • Voice Alarm
  • Battery Powered
  • Battery Safeguard
  • Low Battery Warning
  • Hush® Feature


  • NA


Kidde KN-COSM-XTR-B is a 2 in 1 CO and smoke alarm. With just a single installation, this Kiddle intelligence alarm ensures you are fully aware of any dangerous level of CO and potential fire emergency. CO is a colorless and odorless gas which can cause harm to health. Long duration of exposure to the hazardous CO gas can result in losing consciousness and suffocate. Thus having a Kidde KN-COSM-XTR-B alarm may safe you or your family’s life in case of CO gas leaking.

What we really like about the Kidde KN-COSM-XTR-B detector is the capability of voice alarm. It can make instant notification with “Fire! Fire!” sound when smoke or fire is detected. On the other hand, it will voice out “Warning Carbon Monoxide” when it sense the level of CO in the air is higher than standard level.

There are LED indicators on this Kiddle alarm. If the Kidde KN-COSM-XTR-B is working fine a green light is shown. If any dangerous level of CO and smoke detected, it shows a red light an trigger alarm instantly.

During the first time installation of Kidde KN-COSM-XTR-B alarm, you can make use of the Test/Rest button to test the alarm and trigger a test voice announcement to ensure the setup is completed successfully without problem.

Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm

Kidde KN-COSM-XTR-B ReviewThis Kiddle CO and smoke alarm is powered by battery, thus it can still operate perfectly in the event there is power failure. There is a special battery safeguard feature, it ensure you won’t accidentally mounting the alarm without having a battery installed.

The Kidde KN-COSM-XTR-B alarm also has Hush feature, it can be used to temporary silent any false alarm instantly.

As a summary, we normally advise all house owners to have a few units of Kidde KN-COSM-XTR-B intelligent alarm installed in different corners of the house to ensure maximum protection. In case you want to purchase multiple units of Kidde KN-COSM-XTR-B alarm, you can check the availability of special discount by VISITING HERE.

VN:F [1.9.22_1171]
Rating: 5.0/5 (1 vote cast)
Kidde KN-COSM-XTR-B Review, 5.0 out of 5 based on 1 rating

We have a team of security gadget maniacs who really enjoy using, testing and review security products at, we provide our genuine opinion on the latest home security product on the market. All the reviews and comments are base on our knowledge, experience or testing on the products. You are encourage to give us feedback and comments.

Share This Post

Recent Articles is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Certain content that appears on this site comes from Amazon Services LLC. This content is provided 'As Is' and is subject to change or removal at any time.
© 2017 All rights reserved. Site Admin · Entries RSS · Comments RSS
Powered by WordPress · Designed by Theme Junkie