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Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display

  • Based on 27,263 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Jun 21
Order within 15 hours and 5 minutes
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Size: 1 Pack


Style: Detector


Features

  • Easy Installation - simply plug-in to a standard, 120V outlet in your home
  • 9-volt battery backup provides protection during a power outage
  • Digital LED display shows the level of carbon monoxide the CO alarm is sensing
  • 85-decibel alarm announces when carbon monoxide is detected
  • Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested

Description

The Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display uses electrochemical sensor technology to detect poisonous CO gas in your home and alert you by sounding an 85-decibel alarm. Setup is easy as the Kidde carbon monoxide alarm plugs into a standard, 120V AC power outlet in your home, while a 9-volt alkaline battery (included) works as a backup in the event of a power failure. When carbon monoxide is detected, the digital display shows the level of carbon monoxide the alarm is sensing and updates every 15 seconds. Peak Level Memory records the last time carbon monoxide was detected or when the unit was tested. The Smart-Hush button silences the unit for approximately 8 minutes, which is helpful when this smoke detector carbon monoxide detector combo sounds from things like routine cooking or shower steam. Extension cord (included) allows for placement on a table or shelf. Install a carbon monoxide smoke detector combo on every level of your home and near bedrooms to help keep your family safe. UL Certified with a 10-year limited manufacturer's warranty. Meets requirements of UL 2034, UL217, NFPA72, (chapter 11 2002 edition) The State of California Fire Marshal, NFPA101 (One and two family dwellings) Federal Housing Authority (FHA), Housing and Urban Development (HUD). Protect your family from the dangers of carbon monoxide (CO) exposure with the Kidde KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup and Digital Display. The Nighthawk is an easy-to-install unit that provides reliable protection against the dangers of CO. It features a digital display that shows CO levels in parts per million allowing you to see if, how, and when levels change.KN-COPP-3 Nighthawk Carbon Monoxide Alarm At a Glance:Plug-in unit with battery backup and digital display that shows CO levelLevel button displays the peak CO level recorded by the alarm since it was last resetLoud alarm pattern sounds when unit detects elevated CO levelsDirect-plug, 6-foot power cord, and table top mounting options.Five-year limited warranty This discreet alarm is designed to fit into any standard A/C outlet in your house. View larger. The easy-read digital display updates every 15 seconds to indicate any abrupt changes or alarming trends in CO levels. View larger.Advanced Technology in an Easy-to-Install, Plug-In Design Designed for home use, the Kidde KN-COPP-3 Nighthawk is a UL-listed, A/C-powered, plug- in CO alarm that utilizes sophisticated electronic components and sensor technology to protect you and your family from the dangers of CO. It plugs directly into a standard A/C outlet and includes a 9-volt battery backup that provides continuous monitoring of CO levels--even during power outages.About Carbon Monoxide: The Silent Killer The leading cause of accidental poisoning deaths in North America, carbon monoxide (CO) is often referred to as the silent killer because it's odorless, tasteless, and invisible. Carbon monoxide poisoning can come about via a number of sources, including everyday items and appliances in your home or office. And because symptoms of CO poisoning mimic the flu or other common illnesses it can often go undiagnosed.Audible Alarm Pattern Alerts you to Elevated CO Levels When placed on every level of your home, alarms like the KN-COPP-3 Nighthawk can help protect everyone in the house from CO exposure by giving you an unmistakable signal when levels have reached an unhealthy point. If unhealthy levels are detected, the alarm will emit four quick audible beats every five seconds until either levels decrease or the reset button is pressed.Easy-to-Read Digital Display Shows CO Levels The KN-COPP-3 Nighthawk is unique among traditional CO alarms because of its digital display. This display clearly shows levels of CO that the unit has detected and stored-- from 30 to 999 ppm--and it updates every 15 seconds to indicate any abrupt changes or alarming trends. The display also shows the peak CO level recorded by the alarm since it was last reset or unplugged.LED Shows Sensor Status With the KN-COPP-3 Nighthawk, you never have to wonder if the sensor is functioning properly. A blinking dot in the lower right-hand corner of the display denotes normal operation, so you can trust that it's working. In addition, you can test alarm function by pressing the test/reset button at any time to verify that the horn and electric circuitry are operating properly.Convenient Mounting Options The KN-COPP-3 Nighthawk has a low-profile design that makes it suitable for any room in your home. The detector can be plugged into any standard A/C outlet; it's plug can be snapped into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. In addition, the alarm comes with a 6-foot extension cord, so the unit can be plugged into the wall outlet and then placed on a table or shelf. For the most thorough protection, place an alarm on every level of your home.The UL-listed Kidde KN-COPP-3 Nighthawk has a seven-year life and is backed by a five-year limited warranty.About Kidde: A UTC Fire and Security Brand Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.What's in the Box Kidde KN-COPP-3 Nighthawk CO Alarm, 9-volt battery, mounting hardware, and installation guide. Keep your family safe by placing alarms and extinguishers in each area of the house, and by having a fire escape plan. Click here for a detailed image. 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 The leading cause of accidental poisoning deaths in North America, Carbon Monoxide is odorless, tasteless and invisible, it's a silent killer. Kidde CO alarms include the most accurate sensing technology available, the patented Nighthawk electrochemical sensor. This alarm can be mounted three ways: plug directly into AC receptacle, mount on tabletop using 8 foot power cord, or wall-mount. The digital readout continuously displays carbon monoxide levels from 30-999 parts per million. This unit has a loud, 85-decibel alarm that sounds when CO reaches dangerous levels. One of the features of this product is peak level memory, which means this unit will recall highest level of CO present since previous reset. Install at least one CO alarm on every floor and in sleeping areas. Make sure CO alarms are at least 15 feet away from cooking or heating appliances to prevent false alarms. Replace CO alarms every 5 to 7 years to benefit from the latest technology upgrades. See more

Brand: Kidde


Style: Detector


Power Source: Plug In


Color: White


Product Dimensions: 1.75"D x 3.75"W x 6.06"H


Alarm: Audible


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


Upper Temperature Rating: 37.8 Degrees Celsius


Sensor Type: Ionization


Global Trade Identification Number: 05


Brand: ‎Kidde


Style: ‎Detector


Power Source: ‎Plug In


Color: ‎White


Product Dimensions: ‎1.75"D x 3.75"W x 6.06"H


Alarm: ‎Audible


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


Upper Temperature Rating: ‎37.8 Degrees Celsius


Sensor Type: ‎Ionization


Global Trade Identification Number: ‎05


Material: ‎ABS


Number of Items: ‎1


Manufacturer: ‎Kidde


UPC: ‎784908007605


Part Number: ‎900-0076


Item Weight: ‎1.06 pounds


Country of Origin: ‎Mexico


Item model number: ‎KN-COPP-3


Batteries: ‎2 AA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎1 Pack


Finish: ‎white


Pattern: ‎Detector


Shape: ‎Rectangular


Voltage: ‎120 Volts


Wattage: ‎1 KW


Installation Method: ‎Plug-in


Luminous Flux: ‎1 Lumen


Number of Handles: ‎1


Cutting Diameter: ‎1 Centimeters


Certification: ‎Yes


Usage: ‎Amateur


Included Components: ‎one user manual, one 9V battery, one CO alarm, model KN-COPP-3, one mounting hardware packet (for wall-mount option)


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Description Pile: ‎DURACELL 9V


Battery Capacity: ‎9


Warranty Description: ‎10 Year Limited


Assembled Diameter: ‎1 Centimeters


Date First Available: January 16, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 21

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


  • Big improvement 🏆
Size: 1 Pack Style: Detector
Upon recommendation for ability, and the fact our current CO detector is pushing seven during renovations. It attaches to the ceiling. Figured replacement early based on quality of function for new device and huge savings to buy two as singles if worth it. As vintage ceiling tile are being installed and this device is flexible as to where it sets up. Can be plugged in with the back up battery or wall mounted with battery alone. Although it’s a bit large has a keen sense of detection. There’s no price or device size that matters with safety. But if ya can score a discount kudos. No matter what detector you buy make sure it has a digital read on how much CO2 is invading when it does. To know what’s safe … 0 😁 all seriousness, under 30. The booklet explains the levels. How the device will function in a warning situation. Symptoms o look out for. How long it’ll take to read CO2 depending on how severe it is. It’s recommended to take one on trips when staying at hotels and this detector is easy to set up anywhere. The two pronged action is helpful since this vintage house has a mix of two and three. But for a trip the 9 volt battery is good to go. For RVers this is a must have. Even in a van camping. Better to be safe than sorry. Tip: Write the date of install in permanent marker on the face. This way no need to remember. Tip 2: Same with smoke and fire detectors. For those , what I do is write the yr and month the battery is changed every time. Thin permanent marker should leave plenty of room. Unless hardwired and in ten you just emplacements it. Still, add the date of install. Same with fire extinguishers. Doesn’t hurt to have the fire department inspect it periodically. I know people who’ve lost their hem to fire. Not fun. I know people, like myself, a CO detector got us outta the house. What I like about this detector is the directions have great specifics for set up to avoid false positives and a freak out. Yeah, I did. It was scary. Thank goodness the two times it was for real we were safe. Though at that time we didn’t have a level readout. That’s what makes this gem such a peace. Not sure how long the sale is for. But the singles are a great price now. Hope you score a savings, too. Hope I never hear these defectors go off. But I feel save knowing new ones are in place every ten or less years, if your renovating, where to restock 😊 ... show more
Reviewed in the United States on February 7, 2025 by #AskMissPatience

  • Very important safety device!!
Size: 1 Pack Style: Detector
A must have. Last unit was in place 15 years. It signaled that my furnace was spilling carbon monoxide. I had to replace the furnace, and i was glad i had a co detector. The installer advised i should replace with a new detector because of the age of it. Do not live without one of these if you have gas heating!! ... show more
Reviewed in the United States on June 6, 2025 by Card13

  • They work well
Size: 1 Pack Style: Detector
I've had these for years, and you really can't go wrong. They do what they are supposed to do, thank God.
Reviewed in the United States on June 15, 2025 by Susan M.

  • Works as it is supposed to.
Size: 1 Pack Style: Detector
Kidde KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup and Digital Display is a wonderful product. I had one in my new house when I brought it. But I decided to get another on a different floor just as a back up. The unit works perfectly well. There is one complaint that I have, when plugged into the outlet, it tends to come loose very easily. But since it comes with the 9V battery, I was not worried. I did get a few false alarms in the beginning but it has not been case for the past few months. Overall, I am very happy with the product. It does what is supposed to do. I had decided to buy the unit after doing very extensive review of the detectors and this one seems to get the best reviews. I would recommend this to anyone. Below is the breakdown of various descriptions and features. Provides peace of mind against the silent killer and a digital display • Digital Display - Displays the level of carbon monoxide the unit is sensing. The unit updates this reading every 15 seconds. • Test/Reset Button -Tests unit’s electronic circuitry and horn and resets the unit during alarm. • Peak Level Button -Displays the peak CO level recorded by the alarm since it was last reset or unplugged. • 9V Battery Back-Up -Provides protection during a power outage. • Part Number - 900-0076 Description The Kidde KN-COPP-3 AC powered, plug-in carbon monoxide alarm utilizes sophisticated electronic components and unmatched sensor technology to protect you and your family from the dangers of CO. The KN-COPP-3 includes a 9V battery backup that provides continuous monitoring of CO levels, even during power outages, when AC-only units are not providing protection. The KN-COPP-3 will detect and store measured data of concentrated CO levels as low as 11 and up to 999 PPM with its peak level memory display. This alarm gives you several mounting options, including: direct-plug, a 6’ power cord or table top. Consumer Benefits The Kidde KN-COPP-3 AC powered, plug in carbon monoxide alarm provides you and your family with warning signal to protect against dangerous levels of carbon monoxide in your home. This alarm is easily installed in any of your AC wall outlets. The digital display feature allows for easy viewing of carbon monoxide levels from 30-999PPM (parts per million). The KN-COPP-3 is UL listed and offers a 10-year life and a 10-year limited warranty. Part Number (Ordering Number): 900-0076 Key Features • Digital Display – Displays the level of carbon monoxide the unit is sensing. The unit updates this reading every 15 seconds. • Peak Level Button – Displays the peak CO level recorded by the alarm since it was last reset or unplugged. • 9V Battery Backup –Provides protection during power outage. • Test Button Functions –– Tests the unit for proper operation – Resets the Carbon Monoxide alarm • LED Operation – – Blinking dot in lower right corner of display denotes normal operation – Digital readout displays CO concentration in parts per million (30-900PPM) In alarm condition you will hear 4 quick beeps, 5 seconds off, repeat. Advanced Technology in an Easy-to-Install, Plug-In Design Designed for home use, the Kidde KN-COPP-3 Nighthawk is a UL-listed, A/C-powered, plug-in CO alarm that utilizes sophisticated electronic components and sensor technology to protect you and your family from the dangers of CO. It plugs directly into a standard A/C outlet and includes a 9-volt battery backup that provides continuous monitoring of CO levels--even during power outages. About Carbon Monoxide: The Silent Killer The leading cause of accidental poisoning deaths in North America, carbon monoxide (CO) is often referred to as the silent killer because it's odorless, tasteless, and invisible. Carbon monoxide poisoning can come about via a number of sources, including everyday items and appliances in your home or office. And because symptoms of CO poisoning mimic the flu or other common illnesses it can often go undiagnosed. Audible Alarm Pattern Alerts you to Elevated CO Levels When placed on every level of your home, alarms like the KN-COPP-3 Nighthawk can help protect everyone in the house from CO exposure by giving you an unmistakable signal when levels have reached an unhealthy point. If unhealthy levels are detected, the alarm will emit four quick audible beats every five seconds until either levels decrease or the reset button is pressed. Easy-to-Read Digital Display Shows CO Levels The KN-COPP-3 Nighthawk is unique among traditional CO alarms because of its digital display. This display clearly shows levels of CO that the unit has detected and stored-- from 30 to 999 ppm--and it updates every 15 seconds to indicate any abrupt changes or alarming trends. The display also shows the peak CO level recorded by the alarm since it was last reset or unplugged. LED Shows Sensor Status With the KN-COPP-3 Nighthawk, you never have to wonder if the sensor is functioning properly. A blinking dot in the lower right-hand corner of the display denotes normal operation, so you can trust that it's working. In addition, you can test alarm function by pressing the test/reset button at any time to verify that the horn and electric circuitry are operating properly. Convenient Mounting Options The KN-COPP-3 Nighthawk has a low-profile design that makes it suitable for any room in your home. The detector can be plugged into any standard A/C outlet; it's plug can be snapped into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. In addition, the alarm comes with a 6-foot extension cord, so the unit can be plugged into the wall outlet and then placed on a table or shelf. For the most thorough protection, place an alarm on every level of your home. The UL-listed Kidde KN-COPP-3 Nighthawk has a seven-year life and is backed by a five-year limited warranty. About Kidde: A UTC Fire and Security Brand Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004. ... show more
Reviewed in the United States on June 1, 2016 by DJ

  • Potential life saver. Why live without one?
Size: 1 Pack Style: Detector
I've purcshased 3 of these over time. Great design. After 10 years they are "used up" and must be replaced. I keep going for this one.
Reviewed in the United States on June 9, 2025 by GreggC

  • Works Great - Have Gone off a Few Times for Idling Trucks
Size: 1 Pack Style: Detector
Works Well - Does not False - Been Installed and On for Years - Small Enough to Travel With - Recommended!!
Reviewed in the United States on June 13, 2025 by Michael S.

  • This product saved my life.
Size: 1 Pack Style: Detector
I don't know why I haven't left review before then I kept putting it off.. This thing saved me and my brother's life 2 years ago.. We had a house fire in our smoke alarms weren't working... The fire happened more about the sleep in the middle of night.. Just months before I installed one of these in each of our bedrooms.. It woke me up in the middle of the night from the smoke and I was able to get me and my brother out to safety.. The actual alarm ended up getting melted of course but it than me.. ... show more
Reviewed in the United States on April 23, 2025 by David Carson

  • As expected
Size: 1 Pack Style: Detector
Works great. Have peace of mind now
Reviewed in the United States on June 9, 2025 by Sarah Lamb

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