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

4.7 4.7 out of 5 stars 26,205 ratings

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1 Pack
Detector

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About this item

  • 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
  • Test-Hush Button makes testing the detector or silencing false alarms easy
  • Extension cord (included) allows for placement on a table or shelf
  • 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.
See more product details

Customer ratings by feature

Easy to install
4.8 4.8
Easy to use
4.6 4.6
Accuracy
4.6 4.6
Easy to read
4.6 4.6

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From the manufacturer

Kidde Nighthawk Carbon Monoxide Detector
Kidde Nighthawk Carbon Monoxide Detector
Kidde Nighthawk Carbon Monoxide Detector

Kidde Carbon Monoxide (CO) Detectors – Plug-In

CO Comparison Chart-Images_900-0076

CO + Digital Display

CO Comparison Chart-Images_900-0113

Explosive Gas + CO Alarm

CO Comparison Chart-Images_900-0280

10-Yr CO Alarm

CO Comparison Chart-Images_900-0282

10-Yr + Voice CO Alarm

CO Comparison Chart-Images_Smart CO

Smart CO Alarm

CO Comparison Chart-Images_900-0284

10-Yr + Light CO Alarm

CO Comparison Chart-Images_900-0263

CO Alarm

Customer Reviews
4.7 out of 5 stars
26,205
4.6 out of 5 stars
14,582
4.6 out of 5 stars
14,582
4.7 out of 5 stars
51
4.4 out of 5 stars
192
4.6 out of 5 stars
93
4.7 out of 5 stars
32,112
Detection Type
Carbon Monoxide Explosive Gas, Carbon Monoxide Carbon Monoxide Carbon Monoxide Carbon Monoxide & Air Quality Carbon Monoxide Carbon Monoxide
Power Source
Plug-In; 9V Backup (included) Plug-In; 9V Backup (included) Plug-in; 10-Yr Battery Backup Plug-in; 10-Yr Battery Backup Plug-in; 10-Yr Battery Backup Plug-in; 10-Yr Battery Backup Plug-In; 2AA Backup (included)
No Battery Changes/Night Chirp
Digital Display
Peak Level Memory
Event Memory
Voice Alerts
Connects to WiFi & Kidde App
Real-Time App Notifications
Tamper Resistant
Night Light
Mounting Options
Outlet Outlet, Wall Mount, & Tabletop Outlet;90-Degree Rotating Plug Outlet;90-Degree Rotating Plug Outlet;90-Degree Rotating Plug Outlet;90-Degree Rotating Plug Outlet;90-Degree Rotating Plug
UL Listed

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Product information

Technical Details

Additional Information

Warranty & Support

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Product Warranty: For warranty information about this product, please click here. [PDF ]

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Kidde

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


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Product Description

Product 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).

Amazon.com

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 level
  • Level button displays the peak CO level recorded by the alarm since it was last reset
  • Loud alarm pattern sounds when unit detects elevated CO levels
  • Direct-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.

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Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
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Price$42.43$28.99-10% $12.59
List:$13.99
$26.99-13% $59.99
List:$69.21
-10% $27.79
List:$30.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to install
4.8
4.6
4.4
4.7
4.6
4.4
Accuracy
4.6
4.4
4.0
4.3
4.2
4.0
Easy to read
4.6
4.6
4.2
4.5
4.4
4.3
Easy to use
4.6
4.4
4.3
4.6
4.4
Value for money
4.6
4.3
3.6
Sold By
Amazon.com
X-Sense US
FDUIOSPF
KH Alert
Hembisen.
GEALDEN
power source
Battery Powered
Battery Powered
Battery Powered
AC
Plug-and-play
AC
sensor type
Ionization
Electrochemical
Electrochemical
Electrochemical
Electrochemical
Electrochemical
lower temperature rate
40 degrees fahrenheit
-5 degrees celsius
1 degrees fahrenheit
upper temperature rate
37.8 degrees celsius
50 degrees celsius
176 degrees fahrenheit
style
Detector
Digital
Digital
Modern
3 Packs
Compact
alarm
Audible
Audible
Audible, Visual
Audible
Audible
Audible

Important information

Ingredients

MANUFACTURED BY KIDDE WITH NIGHTHAWK TECHNOLOGY

Legal Disclaimer

New in open box

Brightness

1 lm

Color Temperature

1 °C

Wattage

1 KW

Bulb Voltage

120 volts

Customer reviews

4.7 out of 5 stars
4.7 out of 5
26,205 global ratings

Customers say

Customers like the value, readability, performance, and ease of installation of the gas smoke fire alarm. For example, they mention it's very simple to read, works well, and is easy to install. Customers also like the readout, and protection. That said, opinions are mixed on the battery life and quality.

AI-generated from the text of customer reviews

1,134 customers mention1,005 positive129 negative

Customers like the performance of the gas smoke fire alarm. They mention that it works well, the display is easy to read, and there have been no problems. Some say that the product is great and simple to install. They also like that the digital readout also works and that it's good for ten years. Overall, most are satisfied with the performance and recommend it to others.

"This is my third one I have purchased from Amazon and this is really functional. Easy to set up and all of them have been working as hoped for...." Read more

"...It worked great!" Read more

"I've ordered these CO monitors multiple times. They're GREAT, dependable units and $10 less expensive on Amazon than at at least one of the huge..." Read more

"...The unit works perfectly well. There is one complaint that I have, when plugged into the outlet, it tends to come loose very easily...." Read more

809 customers mention782 positive27 negative

Customers find the installation process of the gas smoke fire alarm to be easy. They mention that the instructions are easy to understand, the product has a bright LED display, and it can be put into use in any location. Customers appreciate the different configurations that the product can be set up in.

"...Easy to set up and all of them have been working as hoped for. A good purchase and lasts about as long as recommended." Read more

"Easy to use, easy to read. Perfect for my peace of mind." Read more

"...The plug-in design made it simple to install in my home, and the 9-volt battery backup provides peace of mind in case of a power outage...." Read more

"Wonderful alarm in terms of size, visibility, and ease of use. If alarm IS triggered, ear-splitting sound!..." Read more

437 customers mention384 positive53 negative

Customers like the value of the gas smoke fire alarm. They say it's a worthwhile purchase and provides cheap life insurance for you and your family. Customers also appreciate the easy to read display and the battery backup.

"...So, even though it's sold at a good price, better than at least one other local store, if they need to be replaced sooner than recommended by Kidde,..." Read more

"...Its ease of installation, reliability, unobtrusive design, and value for money make it a worthwhile purchase...." Read more

"...These Kidde brand units were available at a great price and were very similar to the ones we had that finally failed after many years...." Read more

"...The price was good also, as I got two for less than what it would have cost me at a hardware store." Read more

181 customers mention169 positive12 negative

Customers find the gas smoke fire alarm very simple to read and easy to install. They appreciate the clear documentation and the real UL label. Customers also mention that the device is dependable and user-friendly.

"Easy to use, easy to read. Perfect for my peace of mind." Read more

"...Backup, featuring a Digital LED Display, is a dependable and user-friendly device that effectively protects my family from the silent threat of..." Read more

"...it has a reading display which shows the level of CO2 which is easy to read. it also has memory feature which displays last recorded co2 number." Read more

"...Easy-to-Read Digital Display Shows CO LevelsThe KN-COPP-3 Nighthawk is unique among traditional CO alarms because of its digital display...." Read more

147 customers mention147 positive0 negative

Customers are satisfied with the readout of the gas smoke fire alarm. They mention that it has a digital display, so they are able to see a readout at any time. They also appreciate the direct, accurate readout.

"...a loud alarm that is impossible to ignore, and the digital display shows real-time CO levels, allowing us to monitor our indoor air quality...." Read more

"Wonderful alarm in terms of size, visibility, and ease of use. If alarm IS triggered, ear-splitting sound!..." Read more

"This is easy to install carbon monoxide detector. it has a reading display which shows the level of CO2 which is easy to read...." Read more

"So I got this because I liked that it was digital and a plug in but with a battery back-up just in case the power goes out...." Read more

139 customers mention135 positive4 negative

Customers are satisfied with the protection provided by the gas smoke fire alarm. They mention that it's the best way to stay safe, it makes them feel safer in the home, and it provides a sense of security. Customers also say that the product is foolproof and helps protect everyone in the house from CO exposure.

"...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..." Read more

"Works great for safety from carbon monoxide" Read more

"Works well and feel protected" Read more

"...We have had it now since November of 2018 and it silently protects our lives...." Read more

849 customers mention589 positive260 negative

Customers are mixed about the quality of the gas smoke fire alarm. Some mention that they're dependable units with an industry leading 10 year sensor life. That said, some say that it died, causing it to emit its piercing warning beeps every 30 seconds. That being said, others say that the detector wouldn't stop chirping even with a new battery.

"...A good purchase and lasts about as long as recommended." Read more

"Easy to use, easy to read. Perfect for my peace of mind." Read more

"...lasted just shy of 10 years before developing an unrecoverable error that couldn't be cleared." Read more

"I've ordered these CO monitors multiple times. They're GREAT, dependable units and $10 less expensive on Amazon than at at least one of the huge..." Read more

393 customers mention196 positive197 negative

Customers are mixed about the battery life of the gas smoke fire alarm. Some mention that it has a back up battery in case of power failure, while others say that it only has s limited service life of about 10 years.

"...plug-in design made it simple to install in my home, and the 9-volt battery backup provides peace of mind in case of a power outage...." Read more

"...The door covering the battery is difficult to remove. There are no instructions about installing the battery...." Read more

"...this because I liked that it was digital and a plug in but with a battery back-up just in case the power goes out...." Read more

"...I just wish it lasted longer." Read more

Lots of installation options and peak reading recall make this the one to get
5 Stars
Lots of installation options and peak reading recall make this the one to get
If you have gas appliances in your home then you absolutely need CO detectors. This one in particular has a lot of different mounting options and has been my go-to model.It comes with a 9-volt battery which is used as backup power if for whatever reason the AC power is disconnected. There is a sliding panel on the back that can be removed to reveal the battery compartment as well as the cord for the power supply. You can leave the cord stored in the back of the unit and plug the entire unit directly into a wall outlet, or remove the cord and the AC adapter and mount the unit someplace separate from the actual outlet. The design also allows you to rotate the AC adapter within the unit just in case you need to plug it into an outlet that is oriented sideways.For installation you can just leave it plugged directly into an outlet, use the cord to plug it in and then mount it somewhere else using the keyed holes on the back and the included screws, or pull out the extendable foot from the back of the unit and just have it sitting on a tabletop or shelf.I didn't want to screw anything into my wall some I am using 2 Command Adhesive picture hanging strips on the back of it (see my pictures). Since CO is slightly lighter than air I wanted to mount it several feet off the ground as is recommended by numerous organizations.The unit has a recall button on it which will allow you to view the highest CO level that has been recorded. This is useful if you want to check it every once in awhile to make sure it hasn't detected anything while you weren't around.The detector has a fixed lifespan of 10 years, and it will let you know via the display when it has reached the end of its life.Overall I highly recommend this unit if you're searching for a flexible CO detector.
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Top reviews from the United States

Reviewed in the United States on March 7, 2024
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Reviewed in the United States on March 13, 2023
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Reviewed in the United States on October 15, 2023
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Top reviews from other countries

Mrs Stella Nicholson
1.0 out of 5 stars Did not work
Reviewed in the United Kingdom on September 1, 2021
Size: 1 PackStyle: DetectorVerified Purchase
Fred lorusso
5.0 out of 5 stars good product
Reviewed in Canada on January 3, 2020
Size: 6 PackStyle: DetectorVerified Purchase
Matt & Kim
4.0 out of 5 stars They seem good, a couple were banged up from shipping but ...
Reviewed in Canada on April 15, 2018
Size: 6 PackStyle: DetectorVerified Purchase
4 people found this helpful
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Don
1.0 out of 5 stars poor quality control.
Reviewed in Canada on January 14, 2017
Size: 6 PackStyle: DetectorVerified Purchase
One person found this helpful
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