By: Kidde
The Kidde 21026043 Battery-Operated Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA is the ideal choice for your home safety needs. This alarm is easy to install and offers superior customer support. Its design and build quality are second to none, providing you with peace of mind. It features a built-in red flashing alarm light that indicates when the battery is low, ensuring you never miss a warning. Additionally, it announces fire when a smoke or fire hazard is detected, providing you with an extra layer of safety. With its 85 dB sound at 10 feet, you can be sure that it will grab your attention quickly in the event of an emergency.
Conservative Robert: If you have gas appliances, you should have a CO detector.
United States on Nov 11, 2023
Charlie: Very easy to install…..up and running in minutes…..smoke and carbon monoxide in one unit….will buy another for the basement
United States on Nov 04, 2023
Cappy: Excellent product, but still took 2.5 weeks despite Prime delivery. (Most likely because they were waiting for NEW inventory) In fact these detectors were only 1 month old, which means they were brand new so worth the wait. However they were re-boxed in plain brown cardboard. Most products for new construction come this way. Anyhow I’m very happy as they operate perfectly! Took one star off because I was told by the manufacturer before I purchased them that the use of AA Lithium batteries were ok, when in fact the instructions say to not use AA Lithium batteries.
United States on Oct 31, 2023
jenat: When I first received this alarm, the battery door became stuck between open and closed and I couldn't fix it. Went to the Kidde website and saw that several others had the same problem. After trying the recommended fixes, I called Kidde and the rep agreed to send a replacement since I had tried everything. The new unit arrived and is now functioning properly. It's a unique alarm since the voice tells you what the alarm is and you don't have to count beeps.
United States on Oct 07, 2023
| Battery-Powered Combination Smoke and Carbon Monoxide Alarm by Kidde - No Hardwiring Required | Kidde Carbon Monoxide Detector with Digital Display and Battery-Powered Operation | Kidde Battery-Powered Carbon Monoxide Detector Alarm - Protect Your Home from Dangerous Gas | |
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| B2B Rating |
88
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97
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96
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| Sale off | $15 OFF | $2 OFF | $14 OFF |
| Total Reviews | 2 reviews | 3 reviews | 1 reviews |
| Operating Humidity | 10% to 95% relative humidity, non-condensing | 5% to 95% relative humidity, non-condensing | 5% to 95% relative humidity, non-condensing |
| Manufacturer | No | Kidde Safety | Kidde |
| Is Discontinued By Manufacturer | No | No | No |
| Best Sellers Rank | #780 in Tools & Home Improvement #5 in Smoke & Carbon Monoxide Alarms | #414 in Tools & Home Improvement #5 in Carbon Monoxide Detectors | #107 in Tools & Home Improvement #2 in Carbon Monoxide Detectors |
| Style | Previous Model | Detector Alarm | |
| ASIN | B00PC5S0PA | B004Y6V5CI | B004Y6V6K4 |
| Sensor Type | Ionization | Electrochemical | Electrochemical |
| Batteries Required? | Yes | Yes | Yes |
| Size | 1 Pack | KN-COPP-B-LPM | 1 Pack |
| Special Features | fire safety, ionization, battery powered, tamper-resistant | Portable | |
| Included Components | Kidde Battery-Operated Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA | Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-Copp-B-LPM | 21025778 Carbon Monoxide Alarm Battery |
| Customer Reviews | 4.6/5 stars of 33,950 ratings | 4.7/5 stars of 17,079 ratings | 4.7/5 stars of 28,785 ratings |
| Pattern | Detector | Detector | |
| Item Weight | 12.8 Ounces | 0.16 ounces | 8 ounces |
| Part Number | 21026043 | 21008873 | KN-COB-LP2 9CO5-LP2 |
| Batteries Included? | Yes | Yes | Yes |
| Color | White | Detector | White |
| Brand | Kidde | Kidde | Kidde |
| Power Source | Battery Powered | Battery Powered | Battery Powered |
| Warranty Description | 5-year limited warranty | 10 Year Limited | 10-Year warranty Consult User Guide for more information. |
| Batteries | 2 AA batteries required. | 3 AA batteries required. | 2 AA batteries required. |
| Date First Available | June 17, 2014 | May 11, 2011 | August 13, 2010 |
| Battery Cell Type | NiMH | Alkaline | Alkaline |
| Item model number | KN-COSM-BA | KN-COPP-B-LPM | KN-COSM-BA |
| Item Package Quantity | 1 | 1 | 1 |
| Upper Temperature Rating | 37.8 Degrees Celsius | 37.8 Degrees Celsius | 100 Degrees Fahrenheit |
| Item Weight | 12.8 Ounces | 0.16 ounces | 8 ounces |
| Voltage | 3 Volts | 3 Volts | 3 Volts |
| Certification | Certification & Standards - UL Listed, Standard 2034 | Not_applicable | |
| Alarm | Audible | Audible | Fire safety, battery powered, tamper-resistant |
| Product Dimensions | 1.8"D x 5.6"W x 5.6"H | 4.5 x 1.5 x 2.75 inches | 4.5 x 1.5 x 2.75 inches |
United States on Nov 19, 2023