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10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Smoke Alarm, 2-Pack

Includes 2 units ($14.94 /unit)
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  • Operates on a 10-year lithium battery, tamper-resistant
  • Protection during power outages & no low battery chirps
  • Interconnection capability, so when 1 alarm sounds, they all do
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Product Details

Protect your family with the Kidde 10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Fire Alarm. The Kidde 10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Fire Alarm operates on a 10-year, sealed, tamper-resistant, lithium battery. Using ionization sensor technology, the 10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Fire Alarm alerts to invisible fire particles, even during power outages. A green LED light indicates that smoke alarm is in operation, while red LEDs blink to indicate standby, smoke or fire, and hush mode. After 10 years of use, the Kidde 10 Year Worry-Free Smoke Detector, Lithium Battery Powered, Fire Alarm will chirp once every 40-45 seconds to indicate the alarm needs to be replaced. UL Certified with a 10-year limited warranty. Meets requirements of UL217, NFPA72, The State of California Fire Marshall, NFPA 101, FHA, & HUD.
  • This alarm meets 10 year legislation laws; check local building and safety ordinances for compliance
  • Explore Kidde curated fire safety kits; all products to protect your home from fire in one package
  • Lithium battery never needs replacement - simply recycle the smoke detector
  • Protection during power outages and no low battery chirps
  • Test/hush button: silences the unit for approximately 7-9 minutes
  • No low battery chirps; internal timer alerts you to replace the entire smoke detector after 10 years
  • 85 decibel fire alarm alerts of fire
  • Ionization sensor - detects invisible fire particles (associated with fast flaming fires) sooner than photoelectric sensing alarms
  • Smoke alarms will automatically activate when attached to the mounting bracket
  • Green LED light indicates that the alarm is working properly
  • Red LEDs blink to indicate standby, smoke or fire, & hush mode
  • Replacement Chirp - alerts to replace alarm after 10 years of operation
  • Ensure whole home family protection by placing 1 fire detector and carbon monoxide detector on each level of your home, in your bedroom, & other locations where required by law
  • Industry experts (such as the NFPA), recommend that both ionization and photoelectric smoke alarms be installed to help ensure maximum detection of the various types of fires that can occur within the home.
  • Kidde offers a full range of 120-Volt AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available, when any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning
  • Smoke detectors utilize an ionization sensor to detect fire hazards and sound an 85 db alarm when a hazard is detected
  • Compatible with Kidde, FireX, code one and sentinel products
  • Shop all Kidde Smoke Detectors
  • Learn how to install a smoke alarm
  • Properly prepare your home for a fire emergency
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Additional Resources

From the Manufacturer



Dimensions: H 5.6 in, W 5.6 in, D 1.55 in


Product Depth (in.)1.55 inProduct Height (in.)5.6 in
Product Width (in.)5.6 in


Alarm Sensor TypeIonizationAlarm TypeSmoke
Alarm/Detector Features10-Year Battery, Hush Feature, Tamper Resistant, Value PackBattery Type Required.Built-In
Commercial/ResidentialResidentialConnector/Contact TypeNone
Fixed or portableFixedIncludedBatteries
Pack Size2Power SourceBattery
Returnable90-DayVoltage (V)120 V

Warranty / Certifications

Certifications and ListingsUL Listed

Questions & Answers

Q:Is this Kidde 3 pack (...9889) compatible with your CO / Smoke alarm 21029885? All should be 10 year li-ion battery, not wired, non communicating with each other.
by|Nov 25, 2023
0 Answer
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Q:I put this alarm up in the wrong place. Can I take it down, without disarming the unit, and put in another room?
by|Nov 21, 2023
0 Answer
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Q:Is it ok to replace wired smoke detectors with these battery only powered ones?
by|Nov 13, 2023
1 Answer
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A:  Hello. It is not recommended. These alarms do not interconnect and set each other off. You will want our wireless battery-only alarm, P4010DCS-W model 21028753.

by|Nov 17, 2023
    Q:Why does it keep chirping? It won’t stop even after I hold down the button for 15 seconds.
    by|Oct 12, 2023
    2 Answers
    Answer This Question

    A:  If you are talking about a new device, then it is likely bad [lemons occur even in brand new products]. If you are talking about a device that is existing or has been in use for a while, it could require cleaning with compressed air and/or a vacuum.

    by|Nov 17, 2023

      A:  Hello. Call us with the alarm in hand at 1-800-880-6788. If it is a chirp every 30 seconds, this could be an issue with the alarm and we can help. If it is giving three long beeps, a pause, 3 long beeps, a pause, then that is the alarm going off for smoke falsely if there is no smoke. False alarms are most commonly caused by something interfering with the sensor. To clean the alarm, hold the unit by its edge and thoroughly blow through the gap on the side of the unit with compressed air (like keyboard cleaner). We recommend cleaning out all of your smoke alarms at least every 6 months to a year and at this point we would recommend cleaning out all of your other alarms as well as a preventative. If you have interconnected alarms, the first step is finding the initiating unit, as that is the key. See the owner's manual. Some of your alarms may be in one the locations to avoid listed in the owner's manuals. This would especially include alarms being installed within 3 ft (.9m) of a forced air supply ducts used for heating or cooling, ceiling or whole house ventilating fans, or other high air flow areas. We recommend that alarms not be installed near vents, flues, chimneys, or fans. We recommend that alarms not be installed near doors or windows near areas directly exposed to the weather. We strongly recommend not to install these alarms in garages, attics, and crawl spaces as you will get temperatures, dust, insects, and chemicals that can cause nuisance alarms. Try cleaning out the alarms. If you have the issue again, find the alarm setting off all of the others and call us with that alarm in hand at 1-800-880-6788 so we can get this resolved for you.

      by|Oct 26, 2023
        Showing 1-4 of 210

        Customer Reviews

        4.4 out of 5
        • 4.4
          out of 3,799 reviews
        • 79% recommend this product
        Filter by:
        Showing 1-10 of 3,799 reviews
        Works great. Wanted an alarm that I didn’t have to keep changing the batteries. Definitely worth it. I put them on all three levels in my house.
          After installing fixture motion detector not working, light will come on for 12 seconds and go out and never come back on. Made adjustments still not working.
          Response from Kidde ExpertNov 14, 2023
          Hello, this smoke alarm doesn't have a fixture motion detector. I think this review is for the wrong product.
            False alarms, always at night
            Installed two of these a month ago, one in a hallway near a bathroom and one in bedroom by door. Hallway unit seems fine, have had no issues. Bedroom unit has gone off twice in back-to-back nights waking everyone up. I don't know if the hush button does anything because it rang right through me pushing it. I had to deactivate it at 2 am by discharging the 10-year built in battery, so that unit is trash and has to be replaced after one month. Do not recommend.
              8 found this review helpful
              Easy to install and lasts 10 years.
              What could be better? Three more!
              • Verified Purchase
              • Recommended
              I bought the smoke detector a few months back and hooked it up today (3/19/2023). I tried to test it and it's no good. I spent good hard earned money with Kidde and got junk. Im sure other people have gotten good stuff from them. I don't think I'll buy any thing from them in the future.
                Easy peace of mind
                [This review was collected as part of a promotion.] I got the 2 pack Kidde 10 year smoke detectors and love them. They were so simple to install and I love that it has a built in 10 year battery. The alarm sound is loud and alerts as it should.
                  • Recommended
                  Excellent and easy to install
                  [This review was collected as part of a promotion.] I’ve been using the Kiddie Smoke alarms for a few weeks now and they are easy to install, have a sleek design and seem to be working well. They simply attach and screw on very easily, come with a 10 year warranty and sound very loud when the button is pressed. I like the features in terms of the test button, the hush button and the 10 year warranty. It was even better that they come in a twin pack! I hope to continue to keep my family safe using these Kiddie smoke alarms.
                    • Recommended
                    Feel a lot safer and secure
                    [This review was collected as part of a promotion.] I feel a lot more safer and secure knowing I have these two smoke alarms in my home now. Super easy to install and comes with all the hardware for installation. I won't have to worry about constantly checking and changing the batteries with the ten-year sealed-in lithium battery. I suffer from hearing loss and the alarm in this is loud enough that I can hear it without having my hearing aids in. The alarm has a hush button that will temporarily silence the alarm if activated. I set mine off because I accidentally burnt food I was cooking and the smoke in the air set the alarm off. This also has a test/reset button it as well. I can't recommend this enough. It could help save lives and your home!
                      • Recommended
                      Peace of Mind!
                      [This review was collected as part of a promotion.] Wow, what a great product and concept! Nobody likes to change the batteries on these things at 3 in the morning. This solves that problem! Install them on an anniversary or make a note to help you remember a decade from now to change. Price point is affordable and installation is easy peasy.
                        • Recommended
                        10-Years of No Battery Beeps!
                        [This review was collected as part of a promotion.] Absolutely easy to install. I was able to use one of the existing screw holes from a previous smoke detector. This Kidde smoke detector 2-pack has pre-installed batteries with a 10-year life expectancy. That means 10 years of no annoying dead battery beeps that always seem to happen in the middle of the night. The detector is activated once you twist it onto the installation bracket. Push the button to test (yes, it works and is loud--the family cat zoomed off!) My husband's cooking then tested it again a few days later when the kitchen filled with smoke. Happy with this detector and highly recommend.
                          • Recommended
                          Showing 1-10 of 3,799 reviews

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