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Kidde Plug-In Carbon Monoxide Detector w/ Battery Backup EXPIRED

$11.85
$29.99
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Update: This popular deal is back in stock again.

Amazon has Kidde Plug-In Carbon Monoxide Detector w/ Battery Backup (KN-COP-DP2) on sale for $13.04 -> now $11.84. Shipping is free with Prime or on $25+ orders.

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  • Note, eligible American Express cardholders with Rewards Points may save an additional 15% off (Up to $15 max) when redeeming a minimum of one point ($0.01) towards this purchase (learn more).
About this product:
  • CO (carbon monoxide) detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home.
  • 85dB (decibel) alarm alerts of fire
  • Easy & quick installation: plugs directly into your home's standard wall outlet.
  • Protects during a power failure: two AA batteries (included) provide backup service in the event of a power outage.
  • 120-Volt
  • UL Certified
  • 10-Year Limited Warranty

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  • About this deal:
    • This deal is $18.15 off (61% savings) the retail list price of $29.99.
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    • This product has a 4.7 out 5 star rating based on over 15,051 customer reviews on Amazon.
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Edited November 30, 2021 at 12:09 PM by
Kidde Carbon Monoxide Detector, Plug In with Battery Backup, CO Detector, KN-COP-DP2 $13.04 FS w/ Amazon Prime (or $35 purchase), AC powered w/battery backup

CO detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home
Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire
Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage
Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases
UL Certified, 10-year limited warranty

https://www.amazon.com/gp/product...UTF8&psc=1 >Now $11.84

Please test your carbon monoxide detectors prior to using your gas furnace.
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Not sure why the post only mentions Amazon.
Same price in-store at Walmart.
https://www.walmart.com/ip/Kidde-...2/39360952

11/29 Amazon has dropped price to $11.84 (looks like to match Walmart.com price).

Link to carbon monoxide detector with digital display for $18.98 (I have one in my MBR and use the basic one for my other BRs): DEAD - NOW $29.90

Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup, Digital Display

https://www.amazon.com/Nighthawk-...00002N86A/

https://www.walmart.com/ip/Kidde-...arm/870340

Link to combined carbon monoxide and gas detector for $29.99 (I have this one next to my gas dryer): DEAD - Now $34.50

Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In with Battery Backup, Digital Display
https://www.amazon.com/Nighthawk-...0002EVNJ6/


Amazon has raised prices, but walmart.com still has for $11.84.

https://www.walmart.com/ip/Kidde-...hbdg=L1700


12/6 After raising price, Amazon has dropped price again to $11.84 to match Walmart.com.
Questions & Answers BETA
alwihflsdkjqiw asked this question on 12-01-2021 at 01:21 PM
12-01-2021 at 01:21 PM
No, nor do I think one even exists at the consumer level (maybe for specialty applications in labs or whatnot). There is CO2 all around us all the time; it's what trees breathe. In fact, the usual air we breathe is only about 21% oxygen. The only time CO2 poisoning would ever be a concern is in a literal sealed system (e.g., trapped in a refrigerator). The common notion of suffocation nearly always means CO2 poisoning.
12-02-2021 at 05:12 PM
CO2 detectors (air quality monitors) are gaining popularity to gauge how likely it is that covid is accumulating in a room. If you breathe out (i.e., if you release CO2 & covid) and ventilation is inadequate, CO2 (& covid) levels will continue to rise. Experts recommend that if a CO2 monitor goes above 700 ppm (some say 800), you should ventilate the room, turn on a HEPA filter, or leave (assuming people who aren’t in your “bubble” are present). This one seems like the one I’ve seen in more than one news article (though supposedly, cheaper ones work well enough): https://www.amazon.com/dp/B07YY7BH2W/ . It’s portable so you can take it wherever you go.
yoga4life asked this question on 12-06-2021 at 10:15 AM
12-06-2021 at 11:08 AM
There are smoke detectors that also include carbon monoxide detection. This is not one of those devices.
12-06-2021 at 02:21 PM
Smoke detectors, no. These may pass a code inspection looking for carbon monoxide (CO) detectors if they are installed correctly, but these do not detect smoke.
cat5 asked this question on 12-02-2021 at 02:17 PM
12-02-2021 at 02:17 PM
Price went down to $11.85 each so lucky I had slow shipping and was able to cancel and rebuy
12-06-2021 at 02:25 PM
"Better" is subjective. Plug-in devices with battery backup will always be superior to battery-only devices because they are less likely to completely fail. That said, battery-only detectors have the convenience of anywhere placement, as you said. I wouldn't say it's unsafe to go the battery-only route, but you need to be diligent about putting fresh batteries in every six months, even if no low voltage warnings have occurred. Only you can know if you're the type of person who will remember to do that and follow through. If you're not (don't feel bad; I'm not), then plug-in w/battery backup is the safer choice.
T1NY asked this question on 12-01-2021 at 12:05 PM
12-03-2021 at 12:12 AM
Near your bedrooms.
12-06-2021 at 02:28 PM
Honestly, as many places as possible. In the same room as things that could potentially emit carbon monoxide (gas stove, gas water heater, garage with parked car, even a wood stove) offers earliest detection, but you may then be unable to hear the alarm if it goes off when you're sleeping or if your house is particularly large. Outside of bedroom doors increases likelihood that you'll be awoken, but also that toxic levels of CO may have been released by the time the alarm sounds. Both setups together is safest, but if you have to choose one, choose the one that sounds right for you.
PuneetN asked this question on 11-24-2021 at 12:22 PM
11-24-2021 at 09:18 PM
No, it is a 110v household plug in

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Firefighter here. I just want to confirm that these answers are absolutely correct. Any house using natural gas (generally methane) or propane should have explosive gas alarm(s) in addition to carbon monoxide detectors. Carbon monoxide is created by partially burned fuel releasing CO instead of CO2, and its source can be anything from a faulty pilot light, to a running car in an attached garage, to burning embers in the bottom of an ash bucket next to a wood stove (which can still generate enough CO to kill). It is colorless, odorless...undetectable except by carbon monoxide detectors. Honestly, every house should have at least one CO alarm, even if there aren't any presumed sources.

Explosive gas will not trigger carbon monoxide detectors, even at high concentrations. Usually people rely on the bad smell (like rotten eggs) that is added to natural gas/propane as a warning system. However, we have seen situations where gradual accumulation prevented detection due to nose blindness. A few years ago a man and woman came home from date night and could smell natural gas in their driveway as they pulled up. Their two teenage boys were at the back of the small house (1500 sq ft) playing video games and hadn't noticed a thing. One of them had nudged a kitchen stove burner knob and it was hissing out gas, filling the house. After that, they got one of the these alarms [amazon.com] and put it in their kitchen. Tested by leaving a burner slightly on, unlit...the alarm went off in under five minutes. I have the same unit in my own kitchen.

One last important point: if you smell gas in your house, do not start opening windows to air it out. Explosive gasses are only explosive at relatively low concentrations with air. Propane is only about 10%; methane around 15%. By the time you smell it, it's possible your concentrations could be higher than that. Opening windows could pull you back into the "danger zone". Don't ventilate; evacuate. Call the fire department. We can determine the concentrations and ventilation needs, as well as speed ventilations with fans that are low-risk for causing explosions.

Remember, as a general rule (in the US at least):
• We won't charge you for our help
• You are not bothering us
• If anything, you are probably making our day more interesting
• It is good practice for us
• We are then on-hand in case anything does explode

Alright, enough rambling from me. Be safe, everyone.
In case anyone is wondering where to place these -

Per EPA.gov
Carbon monoxide is actually slightly lighter than air.

https://www.epa.gov/indoor-air-qu...e-detector

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#4
Carbon monoxide is actually slightly lighter than air.

https://www.epa.gov/indoor-air-qu...e-detector
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Quote from fyu :
Carbon monoxide is actually slightly lighter than air.

https://www.epa.gov/indoor-air-qu...e-detector [epa.gov]
.
Yes, I do prefer the detectors with a cord to mount the unit higher up, but you could plug this into an extension cord and sit on a shelf or whatever, or use the battery backup that would need to be verified for longevity.
================\
Regardless, every home with any gas or fossil fuel appliance should have a carbon monoxide detector.
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#6
I believe amazon free shipping starts with $25 purchase and not $35.
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Thanks, OP - I needed one for my Aunt's Christmas present. Just in time!
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Could those be used with say natural gas? Our house has an existing pipe for a fireplace that was never build (it feeds into the house). I want to put this next to it in case if it ever leaks.
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#9
In case anyone is wondering where to place these -

Per EPA.gov
Quote :
Where Should I Place a Carbon Monoxide Detector?

Because carbon monoxide is slightly lighter than air and also because it may be found with warm, rising air, detectors should be placed on a wall about 5 feet above the floor. The detector may be placed on the ceiling. Do not place the detector right next to or over a fireplace or flame-producing appliance. Keep the detector out of the way of pets and children. Each floor needs a separate detector. If you are getting a single carbon monoxide detector, place it near the sleeping area and make certain the alarm is loud enough to wake you up.
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#10
Quote from aajeev :
Could those be used with say natural gas? Our house has an existing pipe for a fireplace that was never build (it feeds into the house). I want to put this next to it in case if it ever leaks.
No, CO is a byproduct of combustion and is colorless/odorless. Natural gas is colorless but usually has a scent added to it so you can tell if there's a leak.
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Quote from aajeev :
Could those be used with say natural gas? Our house has an existing pipe for a fireplace that was never build (it feeds into the house). I want to put this next to it in case if it ever leaks.
You could get one of these (I have one next to my gas dryer):

https://www.amazon.com/Nighthawk-...=hi&sr=1-4

I've read it's better to get separate detectors though as they may expire at different times.
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#12
Quote from kpk11980 :
I believe amazon free shipping starts with $25 purchase and not $35.
I'm a Prime member, but I see this on the listing:

FREE delivery today if you order $35 of qualifying items within 24 mins.
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#13
Quote from iLluFe :
In case anyone is wondering where to place these -

Per EPA.gov
Confused now. I was planning on putting one in the furnace room where my gas water heater and furnace are in the garage. Are these considered flame producing devices😂
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Quote from AG1802 :
Confused now. I was planning on putting one in the furnace room where my gas water heater and furnace are in the garage. Are these considered flame producing devices😂
googling suggests keep them 15 feet away so you avoid false alarms from startup tiny amounts.
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#15
Thanks op. Repped. Got 5 units for my 3 levels and free shipping by today. Am prime member.
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