Internet #303265958

Model # 21027720

0047871277209

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

  • Carbon monoxide alarm plugs directly into wall outlet
  • 9V battery backup for protection even during power outages
  • Digital display updates CO level in PPM every 15 seconds
$ 27 22
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Frequently Bought Together

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Product Overview

  • Carbon monoxide alarm plugs directly into wall outlet
  • 9V battery backup for protection even during power outages
  • Digital display updates CO level in PPM every 15 seconds
The Kidde plug-in digital readout 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.
  • 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
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85dB alarm when a hazard is detected
  • UL/CSFM reference: Kidde part KN-COPP-3



  • UL/CSFM ref. Kidde Part KN-COPP-3
  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Carbon monoxide alarm plugs directly into wall outlet
  • 9V battery backup for protection even during power outages
  • Digital display updates CO level in PPM every 15 seconds
Model #: 21027720
Internet #: 303265958

The Kidde plug-in digital readout 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.

  • 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
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85dB alarm when a hazard is detected
  • UL/CSFM reference: Kidde part KN-COPP-3



  • UL/CSFM ref. Kidde Part KN-COPP-3
  • 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

Product Overview
Key Features
  • Carbon monoxide alarm plugs directly into wall outlet
  • 9V battery backup for protection even during power outages
  • Digital display updates CO level in PPM every 15 seconds
The Kidde plug-in digital readout 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.
  • 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
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85dB alarm when a hazard is detected
  • UL/CSFM reference: Kidde part KN-COPP-3



  • UL/CSFM ref. Kidde Part KN-COPP-3
  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Carbon monoxide alarm plugs directly into wall outlet
  • 9V battery backup for protection even during power outages
  • Digital display updates CO level in PPM every 15 seconds
Model #: 21027720
Internet #: 303265958

The Kidde plug-in digital readout 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.

  • 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
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85dB alarm when a hazard is detected
  • UL/CSFM reference: Kidde part KN-COPP-3



  • UL/CSFM ref. Kidde Part KN-COPP-3
  • 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.

Compare Similar

Compare Similar Products
Brand Kidde Kidde Kidde Kidde
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Price
$27.22
$35.57
$51.94 /bundle
$59.97
Ratings (362) (248) (544) (347)
Power Source Plug-In Battery Plug-In Plug-In
Alarm/Detector Features Battery Back-Up,Digital display,Hush Feature 10-Year Battery,Digital display,Tamper Resistant Battery Back-Up,Hush Feature,Tamper Resistant,Value Pack 10-Year Battery,Battery Back-Up,Digital display,Hush Feature,Tamper Resistant,Voice Alert
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Specifications

Dimensions

Coverage Area (sq. ft)
0
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
Battery Type Required
9-volt
Commercial/Residential
Residential
Connector/Contact Type
None
Fixed or portable
Portable
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

Coverage Area (sq. ft)
0
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
Battery Type Required
9-volt
Commercial/Residential
Residential
Connector/Contact Type
None
Fixed or portable
Portable
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

Kidde Plug-in Carbon Monoxide Detector with 9-Volt Battery Backup and Digital Display is rated 4.7 out of 5 by 362.
Rated 5 out of 5 by from I purchased this as the exact replacement for the... I purchased this as the exact replacement for the unit I had for about 10 years. You can't get any simpler than this. What I really liked about the old unit and this unit, is the display. One day it started beeping, I looked at the display and it said "end" or something to that effect. I looked that up in the tech sheet and it said that the unit is done. Time for a new one. Very helpful. Plus this is plugged in with battery backup so you don't get the nuisance low battery beeping.
Date published: 2019-08-06
Rated 5 out of 5 by from Let me first say that I'm a firefighter. I respond to literally hundreds of calls each year for ... Let me first say that I'm a firefighter. I respond to literally hundreds of calls each year for "Carbon Monoxide Alarm Sounding". In a very small percentage of these calls we find CO, verified by very accurate monitors that we carry. The remainder of the calls are caused by, in order of frequency, dead batteries, expired detectors, or malfuncioning detectors. Please don't misunderstand me; CO is deadly and every time your CO detector goes off it should be taken as a true finding. Get out of the home and call 911. With that said, replace your batteries twice a year, replace your detector when the manufacturer says, and buy this detector. I can't remember the last time I found a Nighthawk that was wrong about CO. It's what I have in my house.
Date published: 2017-01-03
Rated 5 out of 5 by from Very happy with the Kidde Carbon Monoxide Detector that I... Very happy with the Kidde Carbon Monoxide Detector that I bought at Home Depot. Great product, excellent price at Home Depot. Also - great customer service. I wasn't sure where the Carbon Monoxide Detector was located in the store and one of the Home Depot employees showed me where the Detectors were located.
Date published: 2019-07-30
Rated 4 out of 5 by from Hard to review an item that you just plug into... Hard to review an item that you just plug into an outlet and forget until it alarms. Hopefully I’ll never hear it, except to test it or replace the batteries. Easy to order and pick-up thru Home Depot. Not sure why they don’t stock it in stores.
Date published: 2019-10-01
Rated 5 out of 5 by from I had a Kidde carbon monoxide detector and was so happy with the functioning and longevity of it,... I had a Kidde carbon monoxide detector and was so happy with the functioning and longevity of it, I wanted another. Don't hesitate to purchase this item, it's worth the money and then some!
Date published: 2019-08-20
Rated 5 out of 5 by from Love this monitor, it cycles ever so often and displays the reading. Also, plugs into an outlet s... Love this monitor, it cycles ever so often and displays the reading. Also, plugs into an outlet so no batteries to go dead. Purchased a couple of weeks ago.
Date published: 2019-07-23
Rated 5 out of 5 by from This is my second one. The first lasted just about... This is my second one. The first lasted just about 9 years. I can’t tell you if it works, didn’t have any problems. But, I would buy this again.
Date published: 2019-08-20
Rated 5 out of 5 by from These were purchased due to a situation in my home.... These were purchased due to a situation in my home. So far they are good. I like them and if you need some I would recommend these.
Date published: 2019-10-08
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