Internet #100045210

Model # 21027424

Store SKU #201001

Store SO SKU #1000497008

0784908007605

Kidde

Plug-in Carbon Monoxide Detector with 9V Battery Backup and Digital Display

$ 26 43
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Frequently Bought Together

Frequently Bought Together

Product Overview

The Silent Killer: Potential Carbon Monoxide, Sources in Your Home
Potential Causes of CO 2
The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. Protection continues during power outages thanks to a 9-Volt battery backup.Shop all Kidde Smoke Detectors here.
  • Plug-in carbon monoxide detector with digital readout
  • 85dB alarm sounds when carbon monoxide reaches dangerous levels so you can protect your family
  • Test/reset button to check for proper operation and reset the unit
  • 9-Volt battery backup provides protection during power outages
  • Displays carbon monoxide levels from 30 to 999 PPM
  • Updates digital reading every 15-seconds
  • Peak level memory displays highest carbon monoxide level recorded since previous reset or unplugging
  • Plugs into AC receptacles
  • Note: product may vary by store



  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Shop all Kidde Carbon Monoxide Detectors
  • Click here for more information on Electronic Recycling Programs

Product Overview

Model #: 21027424
Sku #: 201001
Internet #: 100045210

The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. Protection continues during power outages thanks to a 9-Volt battery backup.Shop all Kidde Smoke Detectors here.

  • Plug-in carbon monoxide detector with digital readout
  • 85dB alarm sounds when carbon monoxide reaches dangerous levels so you can protect your family
  • Test/reset button to check for proper operation and reset the unit
  • 9-Volt battery backup provides protection during power outages
  • Displays carbon monoxide levels from 30 to 999 PPM
  • Updates digital reading every 15-seconds
  • Peak level memory displays highest carbon monoxide level recorded since previous reset or unplugging
  • Plugs into AC receptacles
  • Note: product may vary by store



  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Shop all Kidde Carbon Monoxide Detectors
  • Click here for more information on Electronic Recycling Programs

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Key Features

The Silent Killer: Potential Carbon Monoxide, Sources in Your Home
Potential Causes of CO 2
The Silent Killer: Potential Carbon Monoxide, Sources in Your Home
Potential Causes of CO 2
Product Overview
Key Features
The Silent Killer: Potential Carbon Monoxide, Sources in Your Home
Potential Causes of CO 2
The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. Protection continues during power outages thanks to a 9-Volt battery backup.Shop all Kidde Smoke Detectors here.
  • Plug-in carbon monoxide detector with digital readout
  • 85dB alarm sounds when carbon monoxide reaches dangerous levels so you can protect your family
  • Test/reset button to check for proper operation and reset the unit
  • 9-Volt battery backup provides protection during power outages
  • Displays carbon monoxide levels from 30 to 999 PPM
  • Updates digital reading every 15-seconds
  • Peak level memory displays highest carbon monoxide level recorded since previous reset or unplugging
  • Plugs into AC receptacles
  • Note: product may vary by store



  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Shop all Kidde Carbon Monoxide Detectors
  • Click here for more information on Electronic Recycling Programs

Product Overview

Model #: 21027424
Sku #: 201001
Internet #: 100045210

The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. Protection continues during power outages thanks to a 9-Volt battery backup.Shop all Kidde Smoke Detectors here.

  • Plug-in carbon monoxide detector with digital readout
  • 85dB alarm sounds when carbon monoxide reaches dangerous levels so you can protect your family
  • Test/reset button to check for proper operation and reset the unit
  • 9-Volt battery backup provides protection during power outages
  • Displays carbon monoxide levels from 30 to 999 PPM
  • Updates digital reading every 15-seconds
  • Peak level memory displays highest carbon monoxide level recorded since previous reset or unplugging
  • Plugs into AC receptacles
  • Note: product may vary by store



  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • Shop all Kidde Carbon Monoxide Detectors
  • Click here for more information on Electronic Recycling Programs

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

The Silent Killer: Potential Carbon Monoxide, Sources in Your Home
Potential Causes of CO 2

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Brand Kidde Kidde Universal Security Instruments Kidde
Name Hardwire Carbon Monoxide Detector with 9V Battery Backup Plug-in Carbon Monoxide Detector with 9V Battery Backup and Digital Display AC Hardwired Iophic Smoke/Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup Code One Battery Operated Carbon Monoxide Detector (6-pack)
Price
$25.17
$26.43
$48.08
$98.97 /bundle
Ratings (115) (356) (76) (988)
Power Source Hardwired Plug-In Hardwired Battery
Alarm/Detector Features Battery Back-Up,Hush Feature,Interconnected Battery Back-Up,Digital display,Hush Feature Adjustable Sensitivity,Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant Hush Feature,Tamper Resistant,Value Pack
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
1.9
Product Height (in.)
6
Product Width (in.)
3.5

Details

Alarm Type
Carbon Monoxide
Alarm/Detector Features
Battery Back-Up,Digital display,Hush Feature
Battery Back-Up
Yes
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Plug-In
Returnable
90-Day
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
1-UL Listed

Specifications

Dimensions

Product Depth (in.)
1.9
Product Height (in.)
6
Product Width (in.)
3.5

Details

Alarm Type
Carbon Monoxide
Alarm/Detector Features
Battery Back-Up,Digital display,Hush Feature
Battery Back-Up
Yes
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Plug-In
Returnable
90-Day
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
1-UL Listed

Questions & Answers

Does this ever need to be replaced?

It won't stop beeping like every 30 seconds.
Asked by: Michele
Yes, if the display says end. That means that the unit has reached the end of its life.
Answered by: Don
Date published: 2019-01-10

When this is plugged in, can you use the other plug for something else?

When this is plugged in, can you use the other plug for something else?
Asked by: Lillie
The other outlet can be used while the detector is in use. Follow safety rules as indicated for the additional appliance.
Answered by: TheAmerican
Date published: 2019-07-03

Does the battery need to be changed it is plug into wall.

Does the battery need to be changed it is plug into wall.
Asked by: None
Yes, because if you have power failure, your carbon monoxide detector will still be operational.
Answered by: Scrap
Date published: 2019-04-09

I don't know but it have to to be 0. That's normal?

Asked by: Adina
Read the owners manual. You can download a manual here: https://www.utcccs-cdn.com/hvac/docs/2001/Public/0B/900-0076.pdf.pdf (.pdf is duplicated, this is correct) The unit should read '0' under normal circumstances. It may read 30-50, considered low level, but should be of short duration. Read the manual for possible contamination scenarios. Any reading above '0' should be taken seriously, call a HVAC technician, vent the room as much as possible.
Answered by: theAmerican
Date published: 2019-02-24
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Customer Reviews

Plug-in Carbon Monoxide Detector with 9V Battery Backup and Digital Display is rated 4.7 out of 5 by 356.
Rated 5 out of 5 by from Was concerned - but now I'm confident that if there... Was concerned - but now I'm confident that if there is a problem - we'll know.
Date published: 2019-07-30
Rated 5 out of 5 by from Saved my butt I bought a Nighthawk plug in in 1996. It's now 2012 and I never realized it need to be replaced. OMG, it just went off at 5:00AM this morning. I found that the side venting furnace had a large hole on the top side of the duct due to rust. CM was leaking into the basement and carried up stairs. My wife had complained about headaches, but we never connected the dots until the alarm went off. Needless to say I'm buying 3 more today! Thanks, NH
Date published: 2012-01-23
Rated 3 out of 5 by from You should stock duel carbon monoxide and explosive gas detectors.... You should stock duel carbon monoxide and explosive gas detectors.
Date published: 2019-06-25
Rated 5 out of 5 by from Replaces same model that reached end of life... Replaces same model that reached end of life
Date published: 2019-08-28
Rated 5 out of 5 by from Easy to install, good options Mario Alaniz ... Easy to install, good options Mario Alaniz
Date published: 2019-08-07
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-07-03
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-07-31
Rated 4 out of 5 by from Good Product has 10 yrs warrantyGREAT!!... Good Product has 10 yrs warrantyGREAT!!
Date published: 2019-08-14
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-07-03
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2019-08-14
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-08-16
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-08-04
Rated 5 out of 5 by from Easy to install with a loud alarm.... Easy to install with a loud alarm.
Date published: 2019-09-10
Rated 5 out of 5 by from Found this product is very good Found this product is very good
Date published: 2019-08-14
Rated 5 out of 5 by from Easy to set up and install... Easy to set up and install
Date published: 2019-08-28
Rated 5 out of 5 by from Hopefully it works Hopefully it works
Date published: 2019-07-30
Rated 5 out of 5 by from It’s great!... It’s great!
Date published: 2019-07-16
Rated 5 out of 5 by from great item... great item
Date published: 2019-09-03
Rated 4 out of 5 by from Great CO detector. I always perform strenuous research on life safety items, as I myself have in... Great CO detector. I always perform strenuous research on life safety items, as I myself have interacted with many different types of gas detector during the course of my career. This CO detector is easy to install, operate, read CO levels, and just daily interaction with device. I chose to wall-mount mine and have received numerous compliments from friends and neighbors (the ones I allow to view my homes mechanical center that is). Only reason I did not give the Kidde KN-COPP-3 5-stars is the top keyhole mount is part of the battery/power cord access door and does not, in my opinion, make for the most solid wall-mount configuration. Other than that one simple observation this is a great CO detector, and it compliments my Kidde i4618 smoke detectors and Kidde KN-COSM-IB combo smoke/CO detectors that are installed in the bedrooms and hallways of my home.
Date published: 2017-09-13
Rated 5 out of 5 by from very versatile I bought this because of its digital readout and max CO level memory. After reading the directions I realized that it has a built-in power adapter ("wall wart" style) with a long cord neatly stowed in back, which allows this unit to be directly plugged into an outlet, or the adapter can be plugged into any outlet while the main unit is resting on a table top (stand included) or is mounted on a wall at a more comfortable reading height than the outlet is located.
Date published: 2014-01-21
Rated 5 out of 5 by from This is extremely well engineered!!! You can remove the transformer to mount away from a plug, o... This is extremely well engineered!!! You can remove the transformer to mount away from a plug, or simply plug it into an outlet. It has a small tap at the bottom you can pull out when plugging directly into the wall outlet to compensate for the wall outlet projecting out from the wall to keep it flat. It comes with a battery, so is dual power.
Date published: 2019-03-26
Rated 5 out of 5 by from A true nighthawk We've had 3 nighthawks and I am purchasing the fourth one. This last one lasted 8 years. We love this product. It never fails. The alarm went off once. And it was due to the gas burner being left on accidentally by someone in the household (could have been me). We leave one upstairs (kitchen) and one downstairs (basement). I personally have encouraged people to buy it and will continue to do so. I am a kidde safety fanatic. We have 3 combo alarms, 2 nighthawks and 2 home fire extinguishers. Can you guess what I do for a living? I am an ER nurse.
Date published: 2010-03-26
Rated 2 out of 5 by from Built in self destruct I bought two of these and they both lasted almost exactly seven years. I purchased them in Feb of 06 and they both displayed Err messages within a week of each other in Feb of 2013. I called Kidde and they told me that they normally last 7 years and then need replacement. Hard to believe but I need to more. Be aware that I was told that it seven years from production date, the date is on the back of the unit. My alarms were both made in Sept of 03 so they had been on the shelf for three years when I bought them. Make sure they are current year production when you buy yours.
Date published: 2013-03-08
Rated 5 out of 5 by from Can't go wrong with this item!! This is the second unit of this particular model we have owned. The first unit was only supposed to last 4-5 years (the detector has a limited lifespan by design), and it lasted over 7 years! This new unit has a supposedly longer lasting detector, which brings me more peace of mind. This unit is so convenient, you can either plug it straight into a wall outlet, or, it will let you take the AC adapter out of the housing, so you can move the unit to the top of a cabinet if needs be (the lead will go to almost 5 feet without difficulty). Price is still reasonable, and even though we could get a combo smoke/monoxide detector now, we have chosen to repeat this purchase. In my opinion, you will not be disappointed. And yes, it DOES detect monoxide levels, works when power goes down (battery back up), and lets you know when the battery gets low, and is loud enough to be heard from 2 stories up!
Date published: 2015-01-28
Rated 5 out of 5 by from 7 year life I finallly got an error message and the manual said to call the company. They asked me for the manufacturing date, which was 8 years ago (which is probably how long I've had it), and said it is simply time to be replaced. I plan on buying another one just like it.
Date published: 2012-02-28
Rated 4 out of 5 by from Easy to use and install Product very user friendly. Very easy to install; basically put the backup battery in and plug it in. Excellent design to rotate the plug to fit the wall outlet.
Date published: 2013-12-10
Rated 5 out of 5 by from It's a life saver It was very easy to plug in to the wall. Everyone should have @ least one, it saved my mother's life a few years ago, when her furnace malfunctioned.
Date published: 2014-10-28
Rated 5 out of 5 by from Trouble free Does what it's supposed to do. Good battery life although unit will shut down automatically after about 8 years
Date published: 2014-02-11
Rated 2 out of 5 by from Defective ok, brought this product in January or Feb of 2014 after my first have showed the ERR message. The first CM lasted 7 years, so replaced with same. Only this time every 2-3 weeks it beeps and shows low battery, replaced the battery each time, long story short after 4-5 months I have replaced the battery several times. Called the company told them the problem, first thing he told me when he asked where I had it, I said the livingroom, he stated "they don't normally recommend it being in LR". Stated I had the last one the same place. Now I am awaiting the replacement from Kidde. Year made is July 2013.
Date published: 2014-05-30
Rated 1 out of 5 by from I have changed the battery twice but it 'chirps' after a week or two. I even had the professiona... I have changed the battery twice but it 'chirps' after a week or two. I even had the professionals out to check for problems with the boiler which came out perfect.
Date published: 2017-01-03
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