Model # 21027190

Internet #301627165

Store SKU #791898

Kidde Plug-In Carbon Monoxide and Explosive Gas Detector with 9V Battery Backup and Digital Display
0047871271900

Kidde

Plug-In Carbon Monoxide and Explosive Gas Detector with 9V Battery Backup and Digital Display

  • Carbon monoxide and gas 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
$ 49 97 /each
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Product Overview

  • Carbon monoxide and gas 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 KN-COEG-3 AC powered, plug-in CO and explosive gas alarm protects you and your family from 2 deadly threats. The KN-COEG-3 includes 9-Volt battery back up that provides protection during a power outage, when AC-only units can not provide protection. By pressing the Peak Level Button you can see the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous digital display shows you the level of carbon monoxide (if any) the unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor designed to detect natural gas (methane) or propane.
  • Alarm is easily installed in any of your AC wall outlets, giving you the choice of a direct-plug, a 6 power cord or a table top unit
  • 6 ft. power cord included for table top option
  • UL listed and offers a 7-year life and a 5-year limited warranty
  • Loud 85 dBA pulsing alarm that will sound to alert you to a potential problem
  • Peak level memory
  • Digital display
  • Product color may vary by store
  • 9-Volt battery backup provides protection during power outages
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • UL/CSFM ref KN-COEG-3
  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Carbon monoxide and gas 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 #: 21027190
Sku #: 791898
Internet #: 301627165

The Kidde KN-COEG-3 AC powered, plug-in CO and explosive gas alarm protects you and your family from 2 deadly threats. The KN-COEG-3 includes 9-Volt battery back up that provides protection during a power outage, when AC-only units can not provide protection. By pressing the Peak Level Button you can see the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous digital display shows you the level of carbon monoxide (if any) the unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor designed to detect natural gas (methane) or propane.

  • Alarm is easily installed in any of your AC wall outlets, giving you the choice of a direct-plug, a 6 power cord or a table top unit
  • 6 ft. power cord included for table top option
  • UL listed and offers a 7-year life and a 5-year limited warranty
  • Loud 85 dBA pulsing alarm that will sound to alert you to a potential problem
  • Peak level memory
  • Digital display
  • Product color may vary by store
  • 9-Volt battery backup provides protection during power outages
  • Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
  • UL/CSFM ref KN-COEG-3
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
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Was $49.97
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Save $9.99 (20%)
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$49.97 /each
Name Plug-In Explosive Gas and Carbon Monoxide Alarm with Digital Display Plug-In Carbon Monoxide and Explosive Gas Detector with 9V Battery Backup and Digital Display Plug-In Combination Carbon Monoxide and Natural Gas Alarm Plug-In Carbon Monoxide and Explosive Gas Detector with 9V Battery Backup and Digital Display
Brand First Alert Kidde Universal Security Instruments Kidde
Ratings (94) (43) (16) (173)
Alarm Type Carbon Monoxide Carbon Monoxide,Natural Gas,Propane Carbon Monoxide,Natural Gas Carbon Monoxide,Natural Gas,Propane
Power Source Battery Plug-In Plug-In Plug-In
Alarm/Detector Features Digital display Battery Back-Up,Digital display Battery Back-Up,Digital display Battery Back-Up,Digital display
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Specifications

Dimensions

Coverage area (sq. ft)
0
Product Depth (in.)
1.8
Product Height (in.)
6.1
Product Width (in.)
3.8

Details

Alarm Type
Carbon Monoxide,Natural Gas,Propane
Alarm/Detector Features
Battery Back-Up,Digital display
Calibration (% of LEL)
25
Connector/Contact Type
None
Fixed or portable
Fixed
Gas(es) detected
Natural gas
Included
Batteries
Minimum detection (ppm)
70
Pack Size
1
Power Source
Plug-In
Response Time (sec.)
240
Returnable
90-Day
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
1-UL Listed

Specifications

Dimensions

Coverage area (sq. ft)
0
Product Depth (in.)
1.8
Product Height (in.)
6.1
Product Width (in.)
3.8

Details

Alarm Type
Carbon Monoxide,Natural Gas,Propane
Alarm/Detector Features
Battery Back-Up,Digital display
Calibration (% of LEL)
25
Connector/Contact Type
None
Fixed or portable
Fixed
Gas(es) detected
Natural gas
Included
Batteries
Minimum detection (ppm)
70
Pack Size
1
Power Source
Plug-In
Response Time (sec.)
240
Returnable
90-Day
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
1-UL Listed

Questions & Answers

Are there a lot of false alarms for the explosive gas component of model KN-COEG-3?

Asked by: SuzyQ
My experience after 2 months of use is NO false alarms....I have located it in a small furnace room that contains both a natural gas furnace and natural gas water heater. As for placing it in the furnace room when the instructions say not to place in furnace rooms--It was my only common sense option in the raised ranch home.-----In any event if i had a gas leak and had placed the detector in an upstairs location or down stairs bedroom far from the furnace and incoming gas lines It may be tooooo late as the gas would never reach the detector in time.... Am I missing something by placing It in the furnace room for earliest possible detection of a gas leak? Agan,I have had NO false alarms and like the units, but you must take time and educate yourself thru the instructions.
Answered by: ROCK
Date published: 2018-09-03

What ppm of carbon monoxide is this sensor able to detect?

We've been researching and it appears there was a law passed disallowing residential carbon monoxide detectors to measure CO below 30 ppm. We are concerned about chronic low-level CO exposure. Also, at what level does the alarm go off?
Asked by: FreshAir
Looks like the question has been answered, but something's amiss. If the Kidde expert is correct, then this model has been redesigned. My 2007 unit with the exact same model number and the exact same case design detects and displays down to 11PPM (Peak memory) -- this capability is specified in the manual.
Answered by: DIYGuy
Date published: 2016-12-02

How many decibels does the alarm sound at, and how many feet away can you hear it?

Asked by: Blackjack
Propane is heavier than air, so I believe that it would need to be closer to the floor level with that particular gas. Natural gas is lighter than air.
Answered by: sidewords
Date published: 2016-05-27

Does this unit work for natural gas

Asked by: jana
Definitely YES!
Answered by: quality1
Date published: 2018-04-28
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Customer Reviews

Plug-In Carbon Monoxide and Explosive Gas Detector with 9V Battery Backup and Digital Display is rated 4.3 out of 5 by 173.
Rated 5 out of 5 by from So far so good! We've had ours installed for about 2 weeks, which comes with lots and lots of peace of mind because we recently had a gas leak in our house and never knew we needed a gas detector instead of just a carbon monoxide detector. The price is high, but you can't put a price on peace of mind. We haven't had any false alarms yet like other reviewers have complained about. We also haven't had any issues with the 9 volt backup battery like others have. Seems to be a good product so far! EVERYONE WHO HAS GAS RUN TO THEIR HOUSE NEEDS TO HAVE ONE OF THESE! We had a low level gas leak in our house that was making me sick, so I will never ever live without one of these again.
Date published: 2013-01-02
Rated 4 out of 5 by from Kidde CO Detector with Battery Back-Up Very easy to install, just plug into an outlet. The first one we purchased was defective. The alarm would constantly go off even when the digital display said zero and no carbon monoxide was in the air. We knew there was no carbon monoxide present because we had another CO detector that did not go off. The alarm is a very high pitched sound that awakens you immediately. We know because it would often sound in the middle of the night. We finally called the manufacturer and they asked us for the serial number. They said it was defective and told us to throw it away. They sent us a new one that we have had no problems with.
Date published: 2006-06-02
Rated 5 out of 5 by from A good value and it works I purchased this unit after my wife woke me up and told me she thought she smelled gas. After being up the rest of the night assuring her she didn’t I drove to Home Depot and picked up this combination Gas/Carbon Monoxide detector unit. I tested it with an open gas valve and it works well. The alarm emits a very loud piercing blast that is sure to wake up even the soundest sleeper. Having an alkaline 9 volt battery (included) backup; it can be unplugged and moved from room to room for testing. You can plug it right into a 110 volt outlet or slide out a built in stand and sit it on the counter. I have used a Nighthawk Carbon Monoxide detector for several years with no problems. In my opinion this combination unit is a very small price to pay for a good night of sleep.
Date published: 2015-06-26
Rated 5 out of 5 by from Excellent unit - no issues after several years of continuous use We purchased this detector a few years ago, and have had no issues with it since. Last night, the gas detector went off. I couldn't smell the odorant in the leaking gas, but I still shut off the flow and called the gas company. They found two small leaks, and were surprised that the unit detected the gas levels found. I previously owned a Nighthawk CO detector (no gas detctor), and it performed quite well.
Date published: 2013-08-08
Rated 4 out of 5 by from Worked when I needed it to. This alarm went off twice and both times it detected a very small gas leak in the old house we were living in. The gas leak was small, and the gas specialist assured us that it was so small it wouldn't even have been an issue, but the fact is, this detector caught it. I've been happy with it and it makes me feel safer. I have a First Alert detector as well, and that one didn't go off when the Kidde Nighthawk did.
Date published: 2011-11-29
Rated 1 out of 5 by from Stay away!! These detectors have been a headache starting 30 days after install. The batteries need to be changed. Constant false carbon monoxide alarms. I've had a licenses plumber/heater determine there are no gas leaks. I've also had the fire department conclude the alarms are faulty. There is nothing setting them off. It seems the batteries leaked after only 30 days of use and now unless I change them every 30 days I have false alarms. It's stressful on my tenants and on me since I am a long distance landlord and bought these for peace of mind but all they do is deliver the opposite, noise and stress. Completely unreliable. Pick a different brand.
Date published: 2016-08-26
Rated 5 out of 5 by from This Product Saved Our Lives!!! Recently, our home was hit by lightning. The lightning ran along the ductwork in the house and punctured holes in the adjacent flexible gas lines. Without this detector, we wouldn't have known so quickly that there was explosive gas filling the basement, and we could have had a very bad outcome. There is no doubt in our minds that this product saved our lives. If you have any gas appliances in your home, this is a must!
Date published: 2006-09-03
Rated 5 out of 5 by from Excellent Product We just purchased this detector about 4 weeks ago and it was proved to be a life-saving decision. My wife had just started baking some blueberry muffins and went to answer the phone. There was a fluxuation in the gas pressure and the oven burners went out. She had only been out of the kitchen for about 2 minutes when the GAS alarm went off. She was able to immediately take action. This item is well worth getting.
Date published: 2007-02-03
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