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Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

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Availability: In Stock.
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Arrives Monday, Sep 1
Order within 7 hours and 53 minutes
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Features

  • Electrochemical sensor technology detects CO gas
  • Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included)
  • Conveniently designed & portable: simple to install on a wall of your home or place on a tabletop
  • Green LED indicates power to the smoke detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
  • Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
  • Test-Hush button makes it easy to test the carbon monoxide detector or temporarily silence the low battery chirp warning
  • UL listed with a 10-Year limited manufacturer warranty on the alarm only (not a battery performance claim). Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that replacement is needed.

Description

The Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, model 900-0146, is a carbon monoxide detector that uses electrochemical sensor technology to detect carbon monoxide. The CO detector is powered by 2-AA alkaline batteries located in the back of the unit, providing easy installation & no wiring, plus coverage during a power failure. The alarm is conveniently designed and portable enough for travel - simply install it on a wall or place it on a tabletop. When carbon monoxide is detected, an 85-decibel alarm will sound & a red LED will flash. A green LED indicates that the alarm is receiving power. The test-hush button allows you to test the battery operations as well as temporarily silence the low battery chirp warning. Plus, peak level memory records the last time carbon monoxide was detected or when the unit was last tested. Install a smoke detector & carbon monoxide detector on every level of your home and near bedrooms to help keep your family safe from fire & poisonous gas. UL Certified with a 10-year limited manufacturer's warranty. Kidde’s KN-COPP-LPM battery- operated carbon monoxide alarm with digital display helps to provide your home with extensive protection against the dangerous threat posed by the odorless and colorless gas. With an increasing number of state and local governments passing legislation requiring CO detectors in homes, it’s never been a better time to safeguard your family against carbon monoxide exposure. KN-COPP-LPM Battery-Operated Carbon Monoxide Alarm At a Glance:Digital display allows for easy monitoring of CO levels Battery operation provides best protection during power outages Peak level memory displays the highest CO concentration since last reset Dimensions: 4.5 inches by 2.75 inches by 1.5 inches; weighs .66 pounds with batteries Five-year limited warranty Kidde's KN-COPP-LPM carbon monoxide detector is a free-standing unit, adding flexibility to placement around your home. View larger Features The KN-COPP-LPM is an essential device to help warn you and your family of dangerous carbon monoxide levels in your home. This alarm measures the exposure to carbon monoxide over time; it is designed to sound at 85 decibels at 10 feet when it detects 70 ppm (parts per million) of CO for 60 to 240 minutes, 150 ppm for 10 to 50 minutes, or 400 ppm for 4 to 15 minutes. The easily visible digital display indicates the level of CO that the unit is sensing, and it updates the status every 15 seconds for timely and accurate readings. Its free-standing design allows for attachment to a wall or placement on a counter or nightstand for convenient and comprehensive protection. The KN-COPP-LPM also includes a slide-out battery door that provides immediate access to the power source as well as a battery safeguard that makes it difficult to close the cover without batteries installed. An LED lighting system on the unit signals power levels and sourcing: the green LED will flash once every 30 seconds to indicate the alarm is operating properly when power is present, and the red LED will pulse to indicate carbon monoxide has been detected until the device is reset or the CO threat is eliminated. This device has an expected 7-year lifespan and comes equipped with a five-year manufacturer’s limited warranty. What's in the Box One Kidde KN-COPP-LPM battery-operated carbon monoxide alarm with digital display and three AA batteries. The KN-COPP-LPM features an easy-to-read digital display in front and an easy-access door to the batteries in back. (Click each to enlarge) P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Kidde KN-COPP-B-LPM Battery-Operated Carbon Monoxide Alarm w/ Digital Display - Digital screen with large display is easy to read - Peak- level memory displays the highest CO concentration measured since the last reset - Meets the all UL requirements - Battery operated with three AA batteries included - Backed by a five-year warranty The new Kidde KN-COPP--LPM carbon monoxide alarm is the only battery-operated alarm that includes a digital display feature. This key feature adds an advanced level of protection that you have come to expect in a Kidde manufactured product. The battery operated CO alarm includes multiple mounting options, allowing installation on a wall or tabletop. This alarm has been carefully designed and tested to detect CO concentration in a residential environment. It provides continuous monitoring of CO levels, even during power outages when many CO incidents occur. The digital display feature allows for easy viewing of carbon monoxide levels from 30-999 PPM (parts per million). The KN-COPP-LPM will also detect and store concentration CO levels as low as 11 and up to 999 PPM with its peak level memory display. This alarm includes a snap-on cover that gives immediate access to the batteries and a safety feature that makes it difficult to close the cover without the batteries being installed. Updates digital reading every 15 seconds, allowing you to see if levels change. The peak level memory displays the highest CO concentration measured since the last reset. The test/reset button tests CO alarm circuit operation and allows you to immediately silence the alarm. A low battery signal alerts users when the batteries need to be replaced. Includes informative LEDs: green LED for normal operation, red LED for alarm. The alarm alerts user to replace CO alarm after 7 years of operation.Sensor: Electrochemical. See more

Brand: Kidde


Power Source: Battery Powered


Color: Detector


Product Dimensions: 1.5"D x 4.5"W x 2.75"H


Item Weight: 0.58 Pounds


Alarm: Audible


Operating Humidity: 5% to 95% relative humidity, non-condensing


Upper Temperature Rating: 37.8 Degrees Celsius


Sensor Type: Electrochemical


Global Trade Identification Number: 37


Brand: ‎Kidde


Power Source: ‎Battery Powered


Color: ‎Detector


Product Dimensions: ‎1.5"D x 4.5"W x 2.75"H


Item Weight: ‎0.58 Pounds


Alarm: ‎Audible


Operating Humidity: ‎5% to 95% relative humidity, non-condensing


Upper Temperature Rating: ‎37.8 Degrees Celsius


Sensor Type: ‎Electrochemical


Global Trade Identification Number: ‎37


Number of Items: ‎1


Manufacturer: ‎Kidde Safety


UPC: ‎785983912532 716080045267 047871088737


Part Number: ‎21008873


Item Weight: ‎9.3 ounces


Item model number: ‎KN-COPP-B-LPM


Batteries: ‎3 AA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎KN-COPP-B-LPM


Pattern: ‎Detector


Voltage: ‎3 Volts


Item Package Quantity: ‎1


Special Features: ‎Portable


Included Components: ‎Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-Copp-B-LPM


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Warranty Description: ‎10 Year Limited


Date First Available: May 11, 2011


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Peace of Mind in a Compact, Reliable Device
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
The Kidde Carbon Monoxide Detector is one of those small investments that delivers huge peace of mind. After installing it in my home, I immediately felt more secure knowing that my family is protected from something as serious—and silent—as carbon monoxide exposure. Setup was incredibly easy. It took just a few minutes to install, and the instructions were clear and straightforward. The digital display is a nice touch—it gives real-time CO levels, which adds an extra layer of reassurance beyond just an alarm. What really stands out is its reliability and thoughtful design. It has a clear, loud alert that’s hard to miss, and the test/reset button works without a hitch. I also appreciate that it’s battery-operated with a backup option, so it continues working even during power outages. In a world where safety often gets overlooked until it’s too late, this detector provides consistent, quiet protection you can depend on. If you’re looking for an easy-to-use, durable, and accurate carbon monoxide detector, Kidde is a brand you can trust—and this unit proves it. Highly recommended for any home, apartment, or even RV. It’s a small device that could make a life-saving difference. ... show more
Reviewed in the United States on May 27, 2025 by Arod

  • Better brand for a reason
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
I've purchased 3 of these over the years and have no issue with them. They're easy to install, have a clear display and I've never received a false alarm. Sound level when testing is fine and I've hd no concerns regarding the quality and durability of this unit. Highly recommend.
Reviewed in the United States on July 13, 2025 by G. A. Case

  • Reliable and easy to use
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
Runs on AA batteries, has clear LEDs, and the test/reset button works well. Loud enough to get your attention. Super easy setup and small enough to take when traveling. Feels like a smart, no-hassle safety buy.
Reviewed in the United States on May 29, 2025 by SM SM

  • Seems to work perfectly
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
As far as I know, it works perfectly. I was very glad that my old 10-year-old model, which expired,was still available from Amazon. So I could hang the new one on the same screws in the wall.
Reviewed in the United States on April 2, 2025 by shopper69

  • Love the digital display for actual reading
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
Great product. Ideally this one goes in the master bedroom so you can keep an eye on the digital reading. Standard type in every other bedroom. Gives me more peace of mind to see the actual reading. Batteries are good too. Tested with multimeter and they were all full strength.
Reviewed in the United States on July 30, 2025 by Ink Independent

  • Perfect
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
I am the "safety freak" of the family and this meets my approval, which is saying a LOT. This item was a great value for the money spent, while not compromising quality or safety. It is easy to use/read, and the alarm is super loud when tested - exactly what we need!
Reviewed in the United States on June 9, 2025 by Just me

  • Easy To Set UP- Long Lasting
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
Easy to set up. Looks as if it's working properly. This is the 2nd one I've purchased - my first one really DID last 10 years!
Reviewed in the United States on August 11, 2025 by Javafox

  • Inexpensive and quick to alert.
Size: KN-COPP-B-LPM Color: Detector Pattern Name: Detector
We had a CO alarm go off in our house while running a generator outside but it did not have a display so we could not tell how high the concentration was. I ordered this and a couple of other CO monitors from Amazon and compared them. The 3 monitors tested were: 1) AS8700A handheld - designed for house inspection, not for continuous monitoring - range 0-1000ppm, 1ppm resolution - can display peak level since last reset - tests continuously, alerts within 5 seconds - adjustable alert level preset to 24ppm - measures ambient temperature - I paid $57 but it can now be found on Amazon for $35 - 3 year lifespan - runs on 3 AAA batteries 2) Kidde KN-COPP-B-LPM - continuous monitoring - stands upright or can be wall mounted - range 30-1000 ppm - can display peak level since last reset - tests every 15 seconds - alerts within 60 to 240 minutes for 70ppm, 10 to 50 minutes for 150ppm, 4 to 15 minutes for 400ppm - $22 - 7 year lifespan, chirps after 7.5 years to remind you to replace it - runs on 3 AA batteries for approximately 2 years 3) X-Sense CO03B - continuous monitoring - wall or ceiling mount - range 30-300ppm, good enough since you should leave the area immediately for levels over 200ppm - no peak level feature - response time is 0-3 minutes for 300ppm - $26 - 10 year lifespan, chirps after 10 years to remind you to replace it - runs on one 9v battery for 3 to 5 years For testing, I filled a garbage bag with car exhaust and placed all monitors in the bag. - The handheld alerted in 5 seconds and read over-range. It - The Kidde alerted after 20 seconds and read 823 ppm - The X-Sense did not alert during the first 30 second test and read 0ppm. I placed it back in the bag for 30 more seconds and it alerted and read it's maximum 300ppm. All 3 worked well. The handheld is best for verifying detections on the other monitors and testing while walking through the house since it is instant read and not designed for continuous monitoring. I placed the Kidde downstairs since I wanted one to place on a shelf for easy access. Since the X-Sense has the longest lifespan and longest battery life, I ceiling mounted it upstairs. ... show more
Reviewed in the United States on February 24, 2021 by E=Itimesar

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