Kidde Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert-KN-COSM-B at The Home Depot


Model # KN-COSM-B

Internet # 203525032

Store SKU # 146852

Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert

Kidde 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.



Model # KN-COSM-B

Internet # 203525032

Store SKU # 146852

Store SO SKU # 198092

Kidde Combination Smoke and Carbon Monoxide provides two important safety devices in a single unit. This alarm includes a voice warning system that announces fire, carbon monoxide, low battery and smart hush activation. The alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement.

  • This combination alarm is battery operated protecting you and your family even during a power outage when many incidences occur
  • Alarm is easy to install, no wiring needed and is suitable for all living areas and has a 7 year life and a 5 year limited warranty
  • Alarm has peak level memory and will alert if a carbon monoxide level of 100 ppm or higher was previously detected
  • Alarm has two methods of warning for danger, a piezoelectric horn that is rated at 85 decibels at 10 ft. and a voice warning that identifies the danger

Info & Guides

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Alarm Sensor Type  Ionization  Alarm Type  Smoke 
Alarm/Detector Features  Hush Feature,Voice Alert,Voice Alert  Assembled Depth (in.)  1.7 in 
Assembled Height (in.)  5.75 in  Assembled Width (in.)  5.75 in 
Certifications and Listings  1-UL Listed  Commercial / Residential  Commercial / Residential 
Connector/Contact Type  None  Electrical Product Type  Carbon Monoxide Detector 
Included  Batteries  Returnable  90-Day 
Voltage (volts) 


Rated 4.3 out of 5 by 3 reviewers.
Rated 4 out of 5 by I needed to replace all of the existing alarms. Of the 6 alarms I ordered online, one was DOA (dead on arrival). After installing the supplied batteries, pushing the Test button, it did not function properly. I received a credit at the local store. The remaining alarms functioned properly and were easy to install. January 21, 2013
Rated 4 out of 5 by great service, delivery. but the darn thing is only good for 7 years very easy to install, easy to figure out. This is a little different than you think. there is a recorded voice that tells you if you have smoke, CO problems or a battery problem and you need to get through them during power up. But it was pretty easy to figure out without the instructions. BUT IT WONT WORK AFTER 7 YEARS. After that it must be replaced. Probably some stupid government regulation. January 1, 2013
Rated 5 out of 5 by Great buy Worked great for 7 yrs But have to replace after that It life is up January 29, 2013
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Store Exclusive. This item is available for purchase in select stores only.