Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
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Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

4.6/5
Product ID: 1141946
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Details

  • Brand
    Kidde
  • Style
    Clamshell
  • Power Source
    Plug In
  • Color
    White
  • Product Dimensions
    4"D x 4"W x
  • Item Weight
    16 ounces
📊Digital LED display updates CO levels every 15s
🔋9V battery backup for power outage safety
🔔85-decibel alarm for unmistakable alerts

Description

🛡️ Stay one step ahead of silent threats with Kidde’s smart gas guardian!

  • PLUG PROTECT INSTANTLY - Effortless plug-in design fits any standard 120V outlet—no tools, no hassle.
  • REAL TIME GAS INTELLIGENCE - Digital display shows exact CO ppm levels and alerts with 'GAS' for explosive gases.
  • STAY POWERED WHEN IT COUNTS - 9-volt battery backup ensures continuous monitoring even during blackouts.
  • MEMORY THAT REMEMBERS DANGER - Peak Level Memory logs last CO detection or test for peace of mind.
  • SMART SILENCE FOR EVERYDAY LIFE - Smart-Hush button temporarily silences nuisance alarms without compromising safety.

The Kidde KN-COEG-3 Nighthawk is a UL-listed plug-in carbon monoxide and explosive gas detector featuring an electrochemical sensor, 9V battery backup, and a digital LED display that updates every 15 seconds. It emits an 85-decibel alarm when detecting CO or explosive gases like methane and propane, includes Peak Level Memory for tracking past alerts, and offers a Smart-Hush button to temporarily silence false alarms. Designed for easy installation and reliable home safety, it meets multiple safety standards and comes with a 5-year limited warranty.

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Specifications

BrandKidde
StyleClamshell Packaging
Power SourcePlug In
ColorWhite
Product Dimensions4"D x 4"W x 2"H
Item Weight16 ounces
AlarmAudible
Operating Humidity5% to 95% relative humidity, non-condensing
Upper Temperature Rating100 Degrees Fahrenheit
Sensor TypeElectrochemical
Global Trade Identification Number00784908011305, 00784908113054
Number of Items1
ManufacturerKidde
UPC783961021658 640025010112 784908113054 784908011305
Part NumberKI-21006677
Item Weight1 pounds
Item model numberKN-COEG-3
Batteries1 9V batteries required. (included)
Is Discontinued By ManufacturerNo
Size6.1”L x 3.8”W x 1.8”H
PatternDetector
Voltage100 Volts
Item Package Quantity1
Number Of Pieces1
Included Components9V Battery
Batteries Included?Yes
Batteries Required?Yes
Battery Cell TypeAlkaline
Warranty Description5 Year Limited

Have a Question? See What Others Asked

I smell natural gas in my house, and am wondering if that is the same as explosive gas? Will it detect natural gas?
is this an explosive gas and carbon monoxide detector? it only says "carbon monoxide detector" on the actual product.
What is the sound level I need one for basement and need to hear on ground floor ?
what happens if you do not use the battery at all?

Reviews

4.6

All from verified purchases

J**N

Works great but when 9v gets low it's the most annoying thing in the world

I'm about to wax poetic about the "Safety Siren Pro Series 1000" (or whatever demonic device this is). Let's be clear, this thing detects carbon monoxide like a bloodhound sniffs out a dropped hotdog at a picnic. No complaints there. If there's a rogue molecule of CO within a five-mile radius, this thing will know. It's like having a tiny, hyper-vigilant, gas-detecting chihuahua with a PhD in atmospheric chemistry.But, and this is a BIG but, when those batteries start to wane, oh. sweet merciful heavens... it's like a tiny, metal-clad demon has taken up residence in my home. The beeping... the BEEPING... isn't your standard, "Oh, batteries are low, please replace me" chirp. No, this is a sustained, high-pitched, soul-rending wail that sounds like a chorus of dying smoke detectors harmonizing with a dentist's drill.It starts subtly, a little "beep" here, a little "beep" there. You think, "Oh, I'll change them tomorrow." WRONG. You've just signed a pact with auditory torment. Within hours, it evolves into a relentless, rhythmic pulse of pure, unadulterated annoyance. My cat now hides under the sofa, my plants have visibly wilted, and I've started having flashbacks to that scene in Reefer Madness where the guy leaps out the window, convinced he's being chased by jazz demons.I swear, this thing is less a safety device and more a psychological warfare instrument. It's so effective at alerting you to low batteries that you'll replace them out of sheer, unbridled terror. You'll be sprinting to the store, batteries clutched in your trembling hands, like you're carrying the antidote to the apocalypse.Five stars for gas detection, minus a million for auditory assault. If you value your sanity, buy this thing, but keep a fresh pack of batteries on standby, and maybe invest in some industrial-grade earplugs. You've been warned.

R**.

Impressive performance

Good: The perfect alarm for a detached garage. Detects smoke, CO, natural gas AND propane, with a display on the front that shows levels of same even when they're too low to trigger the alarm. Alarm is loud enough to hear in the house, eight feet away. Plugs directly into an outlet, or you can detach the power supply and mount the alarm away from the outlet. Pricey, but you get a lot for that price.Bad: Not the most stylish unit. But, in the garage, who cares? At this price point, would have preferred a 10-year lithium backup battery in place of a 9-volt.Bottom line: This is the second unit of this type I've owned, the first reaching end of life after 10 years (CO alarms wear out eventually) and cheeping nonstop to announce same. I tested this one, briefly, with my lawn mower running in a closed garage (with me outside a cracked side door, just in case.) It did indeed start reporting CO levels at around 40 ppm, which steadily climbed until the alarm sounded at about 100 ppm. (Whereupon I held my breath, quickly went in, shut down the mower, opened the big door, went back out and waited until the CO level became too low to measure.) The only additional function I wish it had is a remote link, wifi or whatever, to notify me when I'm unable to hear the alarm. No complaints otherwise. Five stars.

C**Y

I like the numeric readout

We had some issues with a seldom used drain expelling sewer gasses into our house. I like that this one plugs in so no dead batteries. I also like that it has a numeric readout so we can see the level in the room and be confident that it's working.

K**R

It's a bear to get battery cover off.

The unit works very well and is quite sturdy and simple to use. However I had to resort to you tube videos to get ideas how to get the battery cover off... If you are like me with only moderate hand strength use a sturdy screwdriver to help get battery cover to move. Was NOT easy even with the driver. This should be addressed by manufacturer. Plenty of people complaining about this issue.

P**N

A Life-Saving Device Everyone Should Have in Their Home!

The Kidde Carbon Monoxide and Explosive Gas Detector is an absolute must-have for every household. Safety is non-negotiable, and this device provides peace of mind like no other.Right out of the box, setup is a breeze—just plug it in, and you’re protected. The digital display is clear and easy to read, providing real-time updates on CO and gas levels. What truly sets this apart is the dual detection for both carbon monoxide and explosive gases, ensuring comprehensive coverage in one compact device.During testing (using safe methods), the alarm proved to be both sensitive and reliable. The loud, piercing sound is impossible to miss, making it effective in alerting you and your family in case of danger. It’s reassuring to know this device is constantly monitoring, even while we sleep.I also appreciate the sleek, unobtrusive design—it blends seamlessly into any room while remaining highly functional. With Kidde’s reputation for quality and reliability, I feel confident that this detector is working around the clock to protect my home and loved ones.Safety, simplicity, and top-notch performance—this detector delivers it all. Don’t wait until it’s too late—invest in this lifesaver today. Highly recommended for every home, apartment, or office!

M**T

User friendly

Easy set up and use.

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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