Kidde Carbon Monoxide Detector Review
Kidde carbon monoxide detectors gear aimed at buyers who want clear specs before they click through. Key figures include 2, 21008873, 1 Pack.
- Day-to-day benefit: electrochemical sensor technology detects CO gas
- Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included)
- Worth noting: conveniently designed & portable: simple to install on a wall of your home or place on a tabletop
- Green LED indicates power to the smoke detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
- Designed around peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
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Pros
- Kidde presence in Carbon Monoxide Detectors with confirmed ProductHub review status
- Practical detail: easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included)
- Hub price snapshot around $27.79 (USD; check live Amazon pricing)
- Hub specs call out useful numbers such as 2, 85, 10
- Electrochemical sensor technology detects CO gas
Cons
- Battery-powered setups add ongoing battery planning
- Editorial review uses listing specs — not an independent lab stress test
- Live Amazon price, stock, and seller can change after the hub snapshot
At a glance
Kidde carbon monoxide detectors gear aimed at buyers who want clear specs before they click through. Key figures include 2, 21008873, 1 Pack.
As a Safe Pick, the Kidde Carbon Monoxide Detector is a sensible carbon monoxide detectors option when you want Kidde specs you can verify.
- Day-to-day benefit: electrochemical sensor technology detects CO gas
- Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included)
- Worth noting: conveniently designed & portable: simple to install on a wall of your home or place on a tabletop
- Green LED indicates power to the smoke detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
- Designed around peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
Product Specifications
- Brand
- Kidde
- Model
- KN-COPP-B-LPM
- Part #
- 21008873
- Color
- Detector
- Size
- 1 Pack
- Dimensions
- 4.5 x 1.5 x 2.75 inches
- Weight
- 0.6 pounds
- Warranty
- 10 Year Limited
- In the box
- 1
Our Review Approach
In this review, we evaluate the Kidde Carbon Monoxide Detector as a carbon monoxide detectors decision for readers of Home Defense Tips. The goal is practical: separate usable hub specs from packaging language so you can decide quickly.
At harvest, ProductHub showed availability as In Stock with a price snapshot near $27.79. Rank context: #7 in Carbon Monoxide Detectors.
Feature language from the listing (rewritten in the hero bullets, preserved here for context) includes points such as: Electrochemical sensor technology detects CO gas; Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included); Conveniently designed & portable: simple to install on a wall of your home or place on a tabletop.
Who It Is For

This style of home fire safety suits shoppers who already know they need carbon monoxide detectors coverage and want a Kidde option with transparent listing details.
It is a weaker match if you need a fully custom install, a different capacity class, or a feature the hub row simply does not list.
Specs That Matter

The specs table mirrors hub labels and values. Highlights include Brand: Kidde; Model: KN-COPP-B-LPM; Part #: 21008873; Color: Detector; Size: 1 Pack.
Because Home Defense Tips pages are meant to help you choose — not to invent capacity — any dimensions, weights, ranges, or pack counts in this article are copied from hub features/specs rather than guessed.
Translated into daily use, the standout listing claims still revolve around: Electrochemical sensor technology detects CO gas.
Trade-Offs and Limits

Trade-offs are normal in carbon monoxide detectors. A design that wins on portability may give up enclosed storage; a long wireless claim may assume open line-of-sight; a high load rating usually assumes even distribution.
Our Safe Pick badge is editorial shorthand for “worth considering in this category,” not a guarantee for every floor plan, campsite, or property layout.
How It Compares
Against generic no-name alternatives, Kidde listings often win on clearer packaging and easier returns through Amazon — still read the live seller and fulfillment line.
Against premium ecosystems, this unit may look simpler. That can be a feature if you want fewer apps and more straightforward hardware.
Who Should Buy It
Buy the Kidde Carbon Monoxide Detector if the hub numbers and feature set line up with your carbon monoxide detectors job. Skip it if you need a capability the listing does not document.
Next step: use the buy box for the live Amazon offer (tag homedefensetips-20), then confirm price and stock before checkout.
Deeper Context
On the spec sheet, Model is listed as KN-COPP-B-LPM, which is the kind of concrete detail that should drive a buy/skip call.
On the spec sheet, Color is listed as Detector, which is the kind of concrete detail that should drive a buy/skip call.
When we compare carbon monoxide detectors options, we start with footprint, install friction, and whether the listed capacities match a realistic home or field setup rather than a brochure photo.
One listing point worth translating into plain language: Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included). Notable figures in that claim include 2.
Price snapshots help with ballpark budgeting, but promotions, coupons, and seller changes can move the number quickly after the hub as_of timestamp.
On the spec sheet, Dimensions is listed as 4.5 x 1.5 x 2.75 inches, which is the kind of concrete detail that should drive a buy/skip call.
On the spec sheet, Weight is listed as 0.6 pounds, which is the kind of concrete detail that should drive a buy/skip call.
One listing point worth translating into plain language: Green LED indicates power to the smoke detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide. Notable figures in that claim include 85.
On the spec sheet, Part # is listed as 21008873, which is the kind of concrete detail that should drive a buy/skip call.
One listing point worth translating into plain language: Conveniently designed & portable: simple to install on a wall of your home or place on a tabletop.
Because this review is anchored to ProductHub facts for Kidde, we keep invented dimensions out of the copy and only repeat numbers that already appear in features or specs.
One listing point worth translating into plain language: Electrochemical sensor technology detects CO gas.
Further Detail
On the spec sheet, Weight is listed as 0.6 pounds, which is the kind of concrete detail that should drive a buy/skip call.
One listing point worth translating into plain language: Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included). Notable figures in that claim include 2.
On the spec sheet, Part # is listed as 21008873, which is the kind of concrete detail that should drive a buy/skip call.
On the spec sheet, In the box is listed as 1, which is the kind of concrete detail that should drive a buy/skip call.
On the spec sheet, Size is listed as 1 Pack, which is the kind of concrete detail that should drive a buy/skip call.
On the spec sheet, Color is listed as Detector, which is the kind of concrete detail that should drive a buy/skip call.
Further Detail
One listing point worth translating into plain language: Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included). Notable figures in that claim include 2.
One listing point worth translating into plain language: UL listed with a 10-Year limited manufacturer warranty on the alarm only (not a battery performance claim). Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that replacement is . Notable figures in that claim include 10.
On the spec sheet, Dimensions is listed as 4.5 x 1.5 x 2.75 inches, which is the kind of concrete detail that should drive a buy/skip call.
Category context matters: a strong carbon monoxide detectors pick for one household layout can be the wrong shape for another. Use the specs table as the tie-breaker.
On the spec sheet, Warranty is listed as 10 Year Limited, which is the kind of concrete detail that should drive a buy/skip call.
Shoppers often bounce between similar ASINs that differ mainly by color or pack size; our import pipeline dedupes those variants so the review you are reading represents the stronger sales-rank snapshot.
The Bottom Line
As a Safe Pick, the Kidde Carbon Monoxide Detector is a sensible carbon monoxide detectors option when you want Kidde specs you can verify. The numbers that matter most here are 2, 85, 21008873, 1 Pack. Choose it if those figures match your use case; look elsewhere if you need a different form factor or feature set.
View on Amazon →As an Amazon Associate, Home Defense Tips earns from qualifying purchases.
Frequently Asked Questions
How much does it cost?
The hub price snapshot was $27.79 USD. Amazon pricing changes frequently, so treat that as a reference point only.
Is the Kidde Carbon Monoxide Detector in stock?
ProductHub recorded availability as: In Stock. Always confirm stock on the live Amazon page before purchasing.
Who is this carbon monoxide detectors product for?
Buyers who want a Kidde option in carbon monoxide detectors and prefer documented specs over vague marketing claims.



