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Kidde KN-COSM-IB

*Est. $45

Kidde KN-COSM-IB

Combination alarm with voice warning.

pros
  • Combination smoke and CO detector
  • Voice warning
  • Connectable to other models
  • Battery backup
cons
  • Doesn't detect smoky fires
 
 
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5 star:
(33)
4 star:
(10)
3 star:
(0)
2 star:
(0)
1 star:
(5)

Average Customer Review

(48 customer reviews)

for $29.48

Search Reviews
KN-COSM-IB on the Interconnect network w/ other Kidde units, November 18, 2009

Models: KN-COSM-IB and i12080. Easy to install and replace. In my state, combination CO and Smoke units must have Voice warnings. The i12080 unit with the light is a nice feature, though could be a bit… brighter. I have multiple of both units installed on the "interconnect network" of 110V power. The interesting thing discovered is when pressed the Test button on the i12080, only the other i12080 on the entire interconnect network would sound the alarm test and light up. The KN-COSM-IB stays silent. When pressed the Test button of the KN-COSM-IB, all units on the network would sound the alarm and light up. Weird. Let's see how long the backup 9V battery lasts in these units. Other users have reported horrible experiences.

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great price!!!, November 15, 2009
Needed to replace my old ones after 7 years. The price I paid was MUCH better than what was offered at my local home depot/lowes for the same product.
Piece of junk, October 31, 2009

We followed the installation instructions, put in brand new "recommended" batteries and after 30 minutes of plugging it in kept getting battery low messages. Tried the manufacturers phone line 3 times to… get it fixed with no answer, couldn't even leave a message! It took them nearly a week to respond to email, even though I completely explained the problem the only answer they had was to ask a question I had already answered. Needless to say it took them so long to respond the product was out of the 30 day return window. I now have to eat a 15% restocking fee on a product that never worked.

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Easy Safety, October 11, 2009
Before this I did not know that these alarms had a specific lifetime. This one was easy to wire and there was a place to write a date so I (or someone else) will know when to replace it in 7 years.
I will not buy this brand again, October 1, 2009

I have two of these. I've had them for about 2 years now and they are both wired for AC power with "backup" batteries installed. The "backup" battery I installed is a 9V Lithium "Ultralife" which is… claimed to last 10 years in a regular smoke alarm. I've replaced the 9V batteries in my units TWICE since installing them (the second time was today). These units are wired into the AC so a low battery condition should not be a critical alarm. BOTH times when the batteries ran down, the alarm went off in the middle of the night (this morning at 4 AM) and kept going until I ripped the unit off the ceiling. This unit should not start squawking in the middle of the night and keep doing so every 5 minutes due to a LOW BATTERY. Also, the unit should not drain a 10 year battery in 1 year WHILE IT IS POWERED BY AC 100% OF THE TIME. I will never buy another Kiddie product.

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Where To Buy
 
 
 
 
 

Our Sources

1. ConsumerReports.org

In its most recent report, Consumer Reports tests and rates numerous carbon monoxide detectors, including the Kidde KN-COSM-IB.

Review: Buyers' Guide to Smoke and Carbon Monoxide Alarms, Editors of Consumer Reports, Feb. 2008

2. About.com

Rod Brouhard, About.com's guide to first aid, points out some key features of the Kidde KN-COSM-IB along with other carbon monoxide monitors. (Note: ConsumerSearch is owned by About.com, but the two don't share an editorial affiliation.)

Review: Buying Carbon Monoxide Detectors, Rod Brouhard, Sept. 16, 2007

3. Amazon.com

More than 30 owners post reviews of the Kidde KN-COSM-IB, giving it very high average ratings overall. A few report that the monitor gave false alarms.

Review: Kidde KN-COSM-IB Hardwire Combination Carbon Monoxide and Smoke Alarm, Contributors to Amazon.com

4. ConsumerGuide.com

Editors of ConsumerGuide.com give the Kidde KN-COSM-IB a rating of four on a five-point scale and award it a Best Buy designation. The review is based on value, performance, ease of use and features.

Review: Kidde Nighthawk AC Combination Smoke & CO Alarm KN-COSM-IB 900-0114, Editors of ConsumerGuide.com, July 15, 2004

5. Alarmspecs.com

This single-page site rates nearly 200 models of carbon monoxide, heat and smoke detectors based on life-saving features. No detectors receive a perfect score of 12. Based on the editor's scoring, the top ranked models include the Kidde Combo 900-0114/KN-COSM-IB.

Review: Alarm Specification Comparison, Editors of Alarmspecs.com, Dec. 1, 2008

Carbon Monoxide Detectors Runners Up:

KN-COSM-B battery-operated model *Est. $40

2 picks by top review sites.

     
 
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Kidde KN-COSM-B Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking Alarm
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