Kidde Battery Operated Combination Smoke & Carbon Monoxide Alarm with 10-Year Sealed Lithium-Ion Battery-21010262 - The Home Depot


Model # 21010262

Internet # 204249510

Store SKU # 1000013159

Battery Operated Combination Smoke & Carbon Monoxide Alarm with 10-Year Sealed Lithium-Ion Battery

Kidde Battery Operated Combination Smoke & Carbon Monoxide Alarm with 10-Year Sealed Lithium-Ion Battery

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

$39.88 / each


Model # 21010262

Internet # 204249510

Store SKU # 1000013159

Kidde Worry Free 10 year Smoke Alarm is powered by sealed, long-life lithium ion batteries for ten years (the life of the alarm), meaning the alarm is always on. This alarm is ideal for the kitchen. This 10 Year Alarm is a combination smoke and carbon monoxide. The alarm features a unique sensor algorithm that detects real fires faster and reduces nuisance alarms. With a sealed, long-life lithium battery smoke and carbon monoxide combination alarm installed in your kitchen, you can enjoy peace of mind knowing your kitchen smoke alarm is always on.

  • Kidde 10 year kitchen combination smoke and carbon monoxide alarm is maintenance-free; never replace a battery during the alarm's operating life, in addition to the benefit of maintenance free, batteries are sealed; no need to worry about tampering
  • Say goodbye to the late night low battery chirps, an end-of-life signal tells you when it is time to replace the alarm unit, end of life signal chirps every 30-45 seconds when alarm needs replaced
  • Money savings, no batteries to buy and replace every six months, save up to $40.00 over the life of the alarm
  • Alarm is equipped with a test/reset button, tests the circuitry and horn and resets memory after alarm has sounded
  • Alarm is under listed and is equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.

Info & Guides

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Assembled Depth (in.)  11.5 in  Assembled Height (in.)  15.5 in 
Assembled Width (in.)  18.25 in 
Alarm Sensor Type  Photoelectric  Alarm Type  Carbon Monoxide,Smoke 
Alarm/Detector Features  10-Year Battery,Hush Feature,Tamper Resistant  Commercial / Residential  Commercial / Residential 
Connector/Contact Type  None  Included  Batteries 
Power Source  Battery  Returnable  90-Day 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings  1-UL Listed 


Rated 3.8 out of 5 by 20 reviewers.
Rated 1.0 out of 5.0 by 10 years? Not even one. These seemed like a good deal. They were easily installed, and I figured they would be worry free. They were until the false alarms started. During the last one the "Hush" button wouldn't work. I am positive it was for smoke, not co2, and there is no smoke. I opened my patio door and left it outside to see if it would stop and it didn't. I finally had to peel the label and turn the screw, which breaks it. I'm doing more research before I get another one because it will NOT be this brand. September 3, 2014
Rated 1.0 out of 5.0 by Cannot recommend this unit We purchased this unit at Home Depot in August 2013. All seemed to be working well until last week when it started going off for no reason - trust me - there was no fire, smoke or carbon monoxide that would have triggered this. The hush button does not work well - it took many taps on the hush button to get the thing to stop. Since that day, we've experienced numerous false alarms. Reviewers on other websites all have the same comments - it works well for a few months, then starts in with the false alarms. The 10 year warranty and high price aren't worth it. The warranty says they'll repair or replace it. I don't want another one, particularly if it decides to follow the same pattern of issuing false alarms - I'd prefer my $50 back. Our confidence in Kidde has definitely been lowered. May 25, 2014
Rated 1.0 out of 5.0 by After 4 months use, it gives spurious false smoke alarms This unit was priced right and we liked the claim of not having to remember to change batteries for 10 years. we wrote the install date on the unit so it was visible so we would remember to switch the unit out in 2023. However, it has started to give ever more frequent false smoke alarms (4 in the last 24 hours.) I would worry about a problem in our house if it were the CO alarm, but I know there is no source of smoke on a recurring basis, so the problem is with the unit. I guess I need to look for another brand and just bother with changing the battery twice a year. At this point we have to get rid of it because it has cried "wolf" so many times we no longer jump to find a problem in the house, but just try to shut off the annoying ear piercing alarm. Thumbs down. February 21, 2014
Rated 1.0 out of 5.0 by Continuous false alarms. Will be returning all 5. Bought 5 of these to completely update our entire house to brand-new, sealed battery units. All of them installed well, and initially functioned as expected. However, within a few weeks, an individual alarm would randomly start sounding a smoke alarm. There was no smoke, and they were not located near areas with steam or cooking smoke/smells/vapor. I tried switching the detectors to one of the other locations within the house, but the location didn't matter. I have had three of them go off by themselves in various locations in the house. I will be taking these back to my local Home Depot. Unless I got a bunch from the same "bad batch", I don't believe that replacing them will help. (Especially after reading all of similarly poor reviews just on this site.) January 27, 2015
Rated 1.0 out of 5.0 by False Alarms Like the Others I cannot recommend this product due to false alarms. I thought this alarm would be a great value, but I've lost all trust in it since the smoke detector has gone off several times for no reason. I've owned the product less than a year and followed all directions for installation. July 4, 2014
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Store Exclusive. This item is available for purchase in select stores only.