0784908011305

Kidde

Model # KN-COEG-3

Internet # 100003545

Store SKU # 791898

Store SO SKU # 198092

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

$39.88 /each
  • Easy to use and reset
  • Detects airborne methane and propane particles
  • Install directly into AC wall outlet or use included power cord

Frequently Bought Together

Product Overview

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
  • UL listed



Info & Guides

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Specifications

Dimensions

Coverage area (sq. ft) 
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) 
Connector/Contact Type 
None 
Fixed or portable 
Fixed 
Gas(es) detected 
Natural gas 
Included 
Batteries 
Minimum detection (ppm) 
30 
Power Source 
Plug-In 
Response time (sec.) 
Returnable 
90-Day 
Voltage (volts) 
120 

Warranty / Certifications

Certifications and Listings 
1-UL Listed 

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Customer Questions & Answers

34 Questions68 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
Asked by
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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Asked by
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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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Home Improvement Profile: DIYer
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.
+2points
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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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Asked by
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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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Asked by
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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Asked by
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

Rated 4.4 out of 5 by 115 reviewers.
Rated 5.0 out of 5.0 by Great Product!` This was bought to replace an ancient Nighthawk that we bought back in the late 90s early 2000s. The explosive gas detection helped with peace of mind when we bought and moved an old farm house and were not sure the old appliances were safe. Great device! March 16, 2016
Rated 5.0 out of 5.0 by Perfect alert system for the home The all explosive gas detection sold me on this product June 21, 2016
Rated 1.0 out of 5.0 by Impossible to set up I am still trying to figure out how to use this product. The instructions are terrible, and if I am following them correctly, telling me to pull back two tabs while also getting the plug in module out seems impossible to me. I will keep going back to it to see if I can figure out how to use it but so far it is just sitting on the counter. There has to be a better way. May 3, 2016
Rated 5.0 out of 5.0 by 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. June 26, 2015
Rated 5.0 out of 5.0 by Kidde C0 detector Good value! Just like described. Easy to set up and use March 29, 2016
Rated 4.0 out of 5.0 by Propane detector size and features work well. Plug flexibility is a plus. February 23, 2016
Rated 5.0 out of 5.0 by 2 monitors in one An easy, no brain er to protect your family. I read the instructions to know what to expect and plugged it in. That simple. Yes, there is a shelf life and I'll have to replace it in years to come, but I'm fine with that. I really like that it is outside my HVAC closet monitoring to two items that concern me at that location. February 4, 2015
Rated 4.0 out of 5.0 by I don't want to die of bad gas! Plugs into the wall socket. A little large. Seems to be good quality. February 3, 2015
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