Model # KN-COEG-3

Internet #100003545

Store SKU #791898

Store SO SKU #198092

Kidde Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up
0784908011305

Kidde

Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up

  • Easy to use and reset
  • Detects airborne methane and propane particles
  • Install directly into AC wall outlet or use included power cord
$49.97 /each

Frequently Bought Together

Product Overview

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

Protect your home from dual threats by utilizing the Kidde AC Combination Carbon Monoxide/Explosive Gas Alarm. This combination alarm features a digital display that shows the current level of carbon monoxide or methane or propane gas in the air. When a threat is detected, this alarm produces a loud 85 dB pulsing alert that is sure to get your attention.

  • Combines a carbon monoxide and natural gas detector in a single unit for comprehensive protection
  • Metal oxide gas sensor is designed to detect particles of airborne methane and propane
  • 85 dB pulsing alarm sounds to alert you of a potential threat
  • Test/reset button performs a system check to ensure proper operation
  • 9 Volt battery backup provides protection during power outages
  • Peak level button recalls the highest carbon monoxide reading last detected since the most recent reset or power disconnection
  • Digital display shows the level of carbon monoxide or gas currently being detected
  • Install into an AC wall outlet directly or with the included 6 ft. power cord
  • Click here for more information on Electronic Recycling Programs

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35 Questions70 Answers

Customer Questions & Answers

Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up
Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up

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6 answers

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

This question is from Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up
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Rockville, MD
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March 23, 2015
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Answers (6)

June 16, 2016
Answer: 
Just had a gas false alarm.
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October 25, 2015
Answer: 
I bought one of these dual alarms back in 2005. Night Hawk brand before the Kidde take over. After about 9 months, the detector had several false alarms - "GAS". The company, Night Hawk at that time, sent me a new one which worked well for 1 1/2 years before the false alarms started again. I even took the alarm outside in the open air and it still had false alarms - "GAS". Hopefully the new Kidde units Read More
I bought one of these dual alarms back in 2005. Night Hawk brand before the Kidde take over. After about 9 months, the detector had several false alarms - "GAS". The company, Night Hawk at that time, sent me a new one which worked well for 1 1/2 years before the false alarms started again. I even took the alarm outside in the open air and it still had false alarms - "GAS". Hopefully the new Kidde units work better than the old ones. If I thought the problems were fixed, I'd buy another one. Read Less
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June 26, 2015
Answer: 
No, I have had no false alarms and I did test the unit with an open gas valve. It detected the gas, set off the alarm and I have had no occurrences since.
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Asked by
Buufalo NY
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May 13, 2015
Answer: 
Good question. Contact the manufacturer for an answer. It will detect natural gas and CO as well as chlorine. Discovered this while using Clorox to clean some bird feeders next to the detector.
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March 25, 2015
Answer: 
Hello. In reference to your question, the following is a list of substances that at high levels can damage the sensor or cause temporary readings that are not CO or gas readings: Ethylene, ethanol, alcohol, iso-propanol, benzene, toluene, ethyl acetate, hydrogen, hydrogen sulfide and sulfur dioxide. Also most aerosol sprays, alcohol based products, paint, thinner, solvent, adhesive, hair spray, after Read More
Hello. In reference to your question, the following is a list of substances that at high levels can damage the sensor or cause temporary readings that are not CO or gas readings: Ethylene, ethanol, alcohol, iso-propanol, benzene, toluene, ethyl acetate, hydrogen, hydrogen sulfide and sulfur dioxide. Also most aerosol sprays, alcohol based products, paint, thinner, solvent, adhesive, hair spray, after shave, perfume, auto exhaust (cold start) and some cleaning agents. Improper location can also affect the sensitive electronic components in this alarm. To avoid causing damage to the unit, to provide optimum performance, and to prevent unnecessary nuisance alarms, do not install in kitchens, garages or furnace rooms that may expose the sensor to substances that could damage or contaminate it. Do not install in areas where the temperature is colder than 40°F (4.4°C) or hotter than 100°F (37.8°C) such as crawl spaces, attics, porches and garages. Do not install within 5 ft. of heating or cooking appliances. (Kidde recommends 15 ft. to prevent nuisance alarms). Do not install near vents, flues, chimneys or any forced/unforced air ventilation openings. Do not install near ceiling fans, doors, windows or areas directly
exposed to the weather. Do not install in dead air spaces, such as peaks of vaulted ceilings or gabled roofs, where CO or gas may not reach the sensor in time to provide early warning. Do not install this unit near deep-cell large batteries. Large batteries have emissions that can cause the alarm to perform at less than optimum performance. Do not obstruct the vents located on the alarm. Do not place the alarm where drapes, furniture or other objects block the flow of air to the vents. Do not install on a switched or dimmer-controlled outlet. If you have any further questions about this alarm, you can call us at 1-800-880-6788 and we would be happy to help you. Thank you for your interest.
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March 24, 2015
Answer: 
We experienced many false alarms with two units we owned. Using basic household cleaners in the proximity of the device triggered it as well as a few other things. I didn't want to, but we removed the units and put in a carbon monixide only detector (same brand) and it has been fine.
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4 answers

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

This question is from Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up
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st louis, mo
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December 3, 2014
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November 24, 2015
Answer: 
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.
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Buufalo NY
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May 13, 2015
Answer: 
It is loud enough to be heard from the finished basement to the first floor and sometimes on the second floor via HVAC ducts.
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NY, NY
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December 3, 2014
Answer: 
I can hear it loud two floors away. approx 20 feet
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December 3, 2014
Answer: 
Hello. In reference to your question, the sound of alarm is 85+ dB at 10’ @ 3.4±0.5 KHz pulsing alarm. If you have any further questions, you can call us at 1-800-880-6788. Thank you for your interest.
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4 answers

Does this unit work for natural gas

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November 15, 2014
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Asked by
Buufalo NY
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May 13, 2015
Answer: 
Definitely YES!
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Asked by
Olathe
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January 12, 2015
Answer: 
yes
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November 17, 2014
Answer: 
Hello. In reference to your question, yes. THis alarm picks up natural gas, methane, propane, and carbon monoxide. If you have natural gas, you will want to use the built in extension cord and hang the alarm up high on a wall, near the ceiling, and run the extension cord down to the outlet. Carbon monoxide is the same weight as air and can be measured at any height. If you have further questions about Read More
Hello. In reference to your question, yes. THis alarm picks up natural gas, methane, propane, and carbon monoxide. If you have natural gas, you will want to use the built in extension cord and hang the alarm up high on a wall, near the ceiling, and run the extension cord down to the outlet. Carbon monoxide is the same weight as air and can be measured at any height. If you have further questions about this, please call us at 1-800-880-6788 Read Less
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November 16, 2014
Answer: 
Yes. The instructions will note that for natural gas the detachable sensor should be mounted high since natural gas rises. For propane the sensor is often left in the unit if it is plugged into a typical outlet near the floor since propane sinks.
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3 answers

How much power does the unit use when plugged in AC? Also, can is be used w/battery only when power is not available?

This question is from Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up
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February 4, 2016
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Asked by
Buufalo NY
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May 14, 2016
Answer: 
The unit is solid state and power consumption is just about nil. Regarding battery life, kindly refer to the instructions since the battery apparently is used only as a back up in the event of power outages. In our units, replaced the alkaline battery with Lithium. Make sure to date the battery upon install. Instructions are available by Googling nighthawk gas detector instructions.
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February 23, 2016
Answer: 
uses minimal AC power and has a battery back-up
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February 5, 2016
Answer: 
Hello Steve. This alarm uses about a watt of power, and can run on battery backup for up to a day. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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Customer Reviews

Plug-In Combination Explosive Gas/Carbon Monoxide Alarm Detector with Battery Back-up is rated 4.4 out of 5 by 215.
Rated 3 out of 5 by from It's certainly a low-budget smoke detector and feels every bit as much (including the flimsy way ... It's certainly a low-budget smoke detector and feels every bit as much (including the flimsy way it clicks to its mounting plate). The real detractor for me was that it's too small to use as a replacement for normal-sized smoke detectors (the traditional First Alert detectors). Unlike what's shown in some of the pictures, the mounting plate is the same diameter as the rest of the unit. That means the screw holes are too close together to use the existing holes - if you use one of the existing holes in your ceiling, the other hole will be exposed on the outside of the mounting plate.
Date published: 2016-12-27
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 2 out of 5 by from Drains battery I assumed the battery was for back up but I guess that uses it all the time even when it's plugged in. You have to replace the battery every two months in this thing. I come home to it beeping low battery. It's quite heavy in the outlet and can easily be knocked out of the plug. The dog knocked it intentionally out of the wall, after it battery beeped all day, when I got home it was on the ground and the dog was looking upset.
Date published: 2016-09-24
Rated 5 out of 5 by from Looks good Bought this to replace the similar unit which aged out (10 years). This has combustible gas in addition to CO. Installs easily: put in the included battery and plug it in.
Date published: 2016-09-27
Rated 4 out of 5 by from Good value for a home safety device. Especially important for older folks who may have lost part... Good value for a home safety device. Especially important for older folks who may have lost part or all their sense of smell. I just turned 74, and was concerned that I may not be able to smell a gas leak if it occurs. Now I feel a lot more secure. The instructions are a bit long, but for good reasons. I encourage each user to read and understand these instructions, to avoid the instinctive mistakes that I might have made otherwise; i.e. placing it in the garage or near the heater in the attic. Sensible design allows the unit to be placed in an easily visible but inconspicuous part of my bedroom.
Date published: 2017-01-11
Rated 5 out of 5 by from Reliable Product We bought a half-dozen of these, for the house and garage. They have been reliable and plenty loud enough. Only caveat... If you are using them in a kitchen, without a range hood... Keep the sensor clean and unclogged! If you don't wipe the cover with a good degreaser, once a month, the sensor can't function and the alarm will not go off!
Date published: 2016-09-20
Rated 4 out of 5 by from Simple to Use Gas/Carbon Monoxide Detector with 9V Battery I wanted a simple to use and reliable gas/carbon monoxide detector with replaceable battery backup. The instructions were straight forward and understandable to setup and use. The provide a 9V battery which is nice. I did have some initial issues with false warnings and indicators that battery was low. The remedy is to remove the battery and re-install as required to eliminate the false warnings. It my case it was three times before success. I checked the battery with a meter which read correct voltage. It was not the battery.
Date published: 2016-09-27
Rated 5 out of 5 by from It could save your life! I purchased these on an impulse buy. I was walking down the water heater isle and saw these at such a great price. I figure I should pick up a few and install them throughout the house. I install them that weekend and forget about them. A few months later, I'm in my bedroom and I hear a loud beeping coming from downstairs. I go to investigate and find my living room full of smoke. The smoke was caused by frayed wires on a home entertainment system. If it wasn't for this alarm, the smoke would go unnoticed leading to an actual fire. At this price, I would say to buy one for your friends and relatives as well. There aren't many gifts that you can give that can save someones life.
Date published: 2013-04-10
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