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    Kidde Intelligent Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Alert
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    • Description
      Store SKU:

      Kidde 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 respnse 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. When either sensor notices a potential hazard, it will communicate with the other. Depending on what is detected, the alarm will adjust its smoke sensitivity in order to better discriminate between a real hazard and a false one.

      • Single unit provides protection for smoke and carbon monoxide
      • Voice alarm announces the hazard type for quick notification
      • Test/reset button checks the unit's functionality and quiets false alarms
      • Battery operated for easy installation
      • Battery safe guard, unit cannot be mounted without batteries installed
      • Low-battery warning alerts you when the battery needs replacing
      • Alarm has two methods of warning for danger, voice and piezoelectric horn that is rated at 85 decibles at 10 feet
      • CO sensor is furel cell design and provides accuracy of =/-20% at 15 PPM
    • Specifications
      Alarm Sensor Type :
      Alarm Type :
      Carbon Monoxide,Smoke
      Alarm/Detector Features :
      Hush Feature,Voice Alert
      Commercial / Residential :
      Commercial / Residential
      Connector/Contact Type :
      Included :
      Power Source :
      Product Depth (in.) :
      Product Height (in.) :
      Product Width (in.) :
      Returnable :
      Voltage (volts) :
    • Reviews130

      Ratings & Reviews

      93% of customers recommend this product
      Out of 5:
      • Combination Smoke and Carbon Monoxide Alarm with Voice
      • November 23, 2011
      • Recommended Product
      • 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 unitwill “chirp” every 30 seconds. This is an "operational endof life" feature which will indicate that it is time to replacethe alarm.
      • By: SaturdayMorning
    • Write a Review
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    • Shipping & Delivery Options

      Most orders process within 1 business days

      Standard Shipping includes delivery by small parcel service. Processing time varies by product. 

      Orders for this item may be expedited for an additional fee.

      Other Delivery Options:

      Express and Expedited shipping options are also available. Estimated arrival times are available in checkout. If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.


      Express Delivery from Store is available for items currently in stock at a The Home Depot store within a delivery ZIP code. A driver from a local store will deliver the item(s).

      Outside Delivery: Service includes delivery to area outside the house which is accessible by delivery equipment.

      Threshold Delivery: Service includes delivery across your first doorway or threshold (ie. garage, backyard, deck, first room of the home).

    This item cannot be shipped to the following state(s):AK,GU,HI,VI