Kidde Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert-KN-COSM-XTR-BA - The Home Depot
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Internet # 202026789

Store SKU # 622269

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

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

This item has been discontinued.
The Home Depot no longer carries this specific product.

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



Internet # 202026789

Store SKU # 622269

Store SO SKU # 198092

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.

  • Provides protection for smoke and carbon monoxide in one device
  • Voice alarm announces the hazard type for quick notification warning, carbon monoxide or danger, fire, fire
  • Test/reset button checks the unit's functionality and quiets 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

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Alarm Sensor Type 
Alarm Type 
Carbon Monoxide,Smoke 
Alarm/Detector Features 
Hush Feature,Voice Alert 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
Power Source 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 


Rated 4.5 out of 5 by 136 reviewers.
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 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 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 7 yr lifespan, worth price mine just went out last week, after 7 years of faithful service, with no malfunctions along the way. Kiddie makes a great detector, and they have never let me down. This is a great buy, but they do have an even better model out now. This time around, I will be upgrading to the li-ion battery version with a 10 year lifespan ... that's three extra years of expected life, and no batteries to change, plus you get to keep all the same features. And at about $10-$15 more than the standard AAA version, the "higher" price really just buys all those AAA's that you won't need to install... saving you time, and putting less batteries in a landfill!! February 4, 2013
Rated 5.0 out of 5.0 by great product Put one of these units in 5 years ago. Last month the carbon monoxide alarm went off. Called the gas company they came and couldn't find a problem, suggested the alarm was bad. So I bought a new one. That one went off too and after they returned again they found the the heat exchanger on my furnace was cracked and putting co2 into the house. So the sensor saved my family. If you don't have one in your house, get one. January 14, 2014
Rated 5.0 out of 5.0 by very good purchase for price an quality detector was of good quality in structure , it was easy to install, an looks pretty good in any room of the house,sound was good for size. May 12, 2015
Rated 5.0 out of 5.0 by Combination Smoke and Carbon Monoxide Alarm with Voice First Installed this Kiddie M/N# KN-COSM-B combo smoke/CO alarm in October of 2004. It worked fine the entire time it was installed. it uses (3) AA batteries not the typical 9V. The voice prompts (when testing and low battery) are clear and loud enough to hear easily. On the negative side, It hit it's built in expiration date the night before last at 3AM. (7 years and 1 month after the initial installation) Would be nice if they could build it to last 10 years - but then i guess they'd sell less of them because I plan to buy another.. Excerpt from the owners manual about built-in end-of-life countdown timer included below... (from page 5) • After seven (7) years of cumulative power up, this unit will “chirp” every 30 seconds. This is an "operational end of life" feature which will indicate that it is time to replace the alarm. November 23, 2011
Rated 5.0 out of 5.0 by Great detector combo this was a replacement for my out dated detector I like the fact it is both carbon monoxide and smoke detector the old one was just carbon monoxide April 28, 2015
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