Kidde KN-COSM-IB Review


Two of the most common disasters at home are the Carbon Monoxide gas (CO) leaking and fire accidents. It is surely a good practice if you have a prevention plan on hand to minimize the possibility of these disasters. We suggest you to get a Kidde KN-COSM-IB hardwire combination Carbon Monoxide and smoke alarm with battery backup and voice warning, it is one of the best 2 in 1 CO and smoke alarm available on the market today.

Click Here To See What Others Are Saying About Kidde KN-COSM-IB Hardwire Combination CO and Smoke Alarm



  • 2 in 1 CO & smoke detection
  • Ionization Sensor Technology
  • Talking alarm
  • Battery safeguard feature
  • Smart Hush
  • 9 Volt battery backup
  • Test-Rest button


  • It is a wired device, thus additional wiring may be required depend on where you setup the device


There are many features of Kidde KN-COSM-IB alarm which make it a special device, we are going to review some of the essential features. First, the Kidde KN-COSM-IB alarm features Ionization Sensor Technology, this is the most effective ways to detect smoke, flaming or any types of fires quickly. With this sensor, you will be quickly alerted by the fire alarm between seconds when flaming detected.

Besides that, Kidde KN-COSM-IB has a built-in voice alarm. This help to clear confusion of what type of hazard is detected. The alarm will sound a different loud voice for fire or CO, assisting you to react immediately. Furthermore, it also has a sound to indicate low battery in order to remind you it is time for battery replacement.

In fact, the Kidde KN-COSM-IB CO and smoke alarm is powered by 120V AC electricity. It has a 9 volt battery backup which will automatic take over when power failure is detected.

What we actually like about the Kidde KN-COSM-IB alarm is the highly efficient interconnectivity feature. The device utilizes the Kidde Smart Interconnect technology which allows interconnects up to 24 Kidde devices. We recommend you to have multiple units of Kidde KN-COSM-IB alarm installed at different corners of your house. If any units of the alarm detect a hazard, all of the Kidde alarms will sounds.

Kidde KN-COSM-IB Hardwire Combination Carbon Monoxide and Smoke Alarm

Kidde KN-COSM-IB ReviewOn the other hand, the Kidde KN-COSM-IB also has a Test-Reset button which can be used to test the alarm’s voice announcement. In case you want to silent the alarm, you can make use of the Smart Hush feature to stop the alarm instantly.

There are some other features of Kidde KN-COSM-IB CO and ionization smoke alarm we did not discuss above, such as batter safeguard feature, alarm tamper resist, LED indication etc. Basically the Kidde KN-COSM-IB definitely worth every penny you pay for it.

CLICK HERE. for closer look into Kidde KN-COSM-IB 2 in 1 CO & smoke alarm.

VN:F [1.9.22_1171]
Rating: 3.0/5 (2 votes cast)
Kidde KN-COSM-IB Review, 3.0 out of 5 based on 2 ratings

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