Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
Hero image 0 of Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup, 0 of 12

Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup

4 stars out of 189 reviews
(4.0)|
189 ratings

Key item features

  • Knox Safety Plugin Carbon Monoxide Alarm
  • TRIO Warning System - Alerts, Informs and Directs you in an Emergency
  • Voice Alerts - Provide Detailed Instructions and Directions
  • Intelligent Display - Clearly Communicates Warning and Notifications
  • Multi-Language Alarm - Alerts in English or Spanish at the Push of a Button
  • 10-Year Never Replace Battery backup - Lasts the life of the alarm
Current price is $51.00
Price when purchased online
  • Free shipping
  • Free 90-day returns
Walmart Protection Plan by Allstate

(Only one option can be selected at a time)

How do you want your item?

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
How do you want your item?
Columbus, 43215
Arrives by Today
.
Order within 10 hr 18 min
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
walmart plus

Get free delivery, shipping and more*

*Restrictions apply

About this item

Product details

Specifications

Warranty

Warnings

Customer ratings & reviews

4 out of 5 stars
stars189 ratings151 reviews
How item rating is calculated

Reviews summary

Pros
  • : Setup takes only a few seconds or minutes with instructions.
  • : Simple setup and minimal effort required.
  • : Provides detailed instructions in emergency situations.
  • : Has an internal battery that doesn't require frequent replacement.
Neutral
  • : Offers long-term value, but can be pricey for some users.
Cons
  • : Produces a persistent sound when in use.
Generated by AI

Customer photos

  • +97 images
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 151 reviews

Jan 23, 2026
JOCELYN
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

so far so good

I've only had it for a day but as of right now i think it was just what i needed- no complaints. I'm going to purchase a second one for my upstairs too.

Helpful?3O4CB76POB4O435292281
Jan 27, 2026
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I am visually impaired and this detector has voice activation to help me know what's happening.

Incentivized Review
Helpful?3O4CB76POB4O435292281
Dec 28, 2024
James
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Extremely easy to operate. No hassle.

Helpful?3O4CB76POB4O435292281