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expiredhawkblu09 | Staff posted Aug 15, 2024 01:50 PM

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expiredhawkblu09 | Staff posted Aug 15, 2024 01:50 PM

First Alert CO605 Plug-In Carbon Monoxide Detector w/ Battery Backup

$18

$36

50% off

Amazon

30 Comments 29,478 Views

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Update: This is popular deal is still available.

Amazon has First Alert CO605 Plug-In Carbon Monoxide Detector w/ Battery Backup on sale for $17.99. Shipping is free w/ Prime or on orders $35

Target has First Alert CO605 Plug-In Carbon Monoxide Detector w/ Battery Backup on sale for $17.99. Select free store pickup where stock permits. Otherwise, shipping is free w/ Target Circle Card, Target Circle 360 Membership, or on $35+ orders.

Note: Availability for pickup may vary by location.

Thanks to Deal Hunter hawkblu09, Deal Editor citan359, and Community Member slickymarky for finding this deal.

Features:

Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
Simple to use, with a single test/silence button; a loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. Low battery signal mute, quiets low battery signal for upto 8 hours
To ensure complete protection make sure to place one on each level of your home and in each bedroom
7 year limited warranty; Equipped with end of life signal chirp, so you know when it's time to replace the unit for safety
All first alert CO alarms are rigorously tested to meet UL standards. Item length is 3.4 inches , item width is 1.38 inches and item height is 5 inches
Loud 85-decibel alarm sounds when CO levels are elevated

Editor's Notes

Written by SlickDealio

About this deal:
- This price is $17.55 lower (49% savings) than the list price of $35.54
About this product:
- Rating of 4.7 from over 18,000 customer reviews.
About this store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
- Sign-up for Target Circle Card to save an additional 5%, receive free shipping, and attain an extended return period.

Original Post

Written by hawkblu09 | Staff

Note: Availability for pickup may vary by location.

Thanks to Deal Hunter hawkblu09, Deal Editor citan359, and Community Member slickymarky for finding this deal.

Features:

Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
Simple to use, with a single test/silence button; a loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. Low battery signal mute, quiets low battery signal for upto 8 hours
To ensure complete protection make sure to place one on each level of your home and in each bedroom
7 year limited warranty; Equipped with end of life signal chirp, so you know when it's time to replace the unit for safety
All first alert CO alarms are rigorously tested to meet UL standards. Item length is 3.4 inches , item width is 1.38 inches and item height is 5 inches
Loud 85-decibel alarm sounds when CO levels are elevated

Editor's Notes

Written by SlickDealio

About this deal:
- This price is $17.55 lower (49% savings) than the list price of $35.54
About this product:
- Rating of 4.7 from over 18,000 customer reviews.
About this store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
- Sign-up for Target Circle Card to save an additional 5%, receive free shipping, and attain an extended return period.

Original Post

Written by hawkblu09 | Staff

Deal Score

+42

Visit Amazon

Price Intelligence

Model: Plug-In Electrochemical Carbon Monoxide Alarm

Deal History

Sale Price

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Current Prices

Sort: Lowest to Highest | Last Updated 9/2/2025, 08:10 PM

Sold By	Sale Price
Lowe's	$23.98
Walmart	$27.99
Ace Hardware	$34.99

Unregistered (You)

29 Comments

citan359

Pro

Deal Editor

Aug 15, 2024 02:07 PM

6,131 Posts

Joined May 2011

citan359

Pro

Deal Editor

Aug 15, 2024 02:07 PM

6,131 Posts

Also at Amazon [amazon.com] for the same price

hawkblu09

Original Poster

Pro

Deal Hunter

Aug 15, 2024 02:37 PM

6,319 Posts

Joined Sep 2022

hawkblu09Aug 15, 2024 02:37 PM

Original Poster

Pro

Deal Hunter

6,319 Posts

Quote from citan359

Also at Amazon [amazon.com] for the same price

Thanks SO much! heart

SDdawg

Pro

Aug 15, 2024 03:16 PM

732 Posts

Joined Sep 2010

SDdawg

Pro

Aug 15, 2024 03:16 PM

732 Posts

Recent deal dropped down to $8.88 each when buying a pair on Amazon

1984LA

Aug 15, 2024 03:56 PM

147 Posts

Joined Apr 2015

1984LAAug 15, 2024 03:56 PM

147 Posts

Quote from SDdawg

Recent deal dropped down to $8.88 each when buying a pair on Amazon

Any chance you can share that link?

SDdawg

Pro

Aug 15, 2024 04:04 PM

732 Posts

Joined Sep 2010

SDdawg

Pro

Aug 15, 2024 04:04 PM

732 Posts

Quote from 1984LA

Any chance you can share that link?

2 mos ago

https://slickdeals.net/share/iphone_app/fp/963753

adam empire

Aug 15, 2024 04:37 PM

2,288 Posts

Joined Mar 2007

adam empireAug 15, 2024 04:37 PM

2,288 Posts

Maybe it's just me, but I keep a unit in my bedroom. Separate from the hardwired home system. It is well worth the $17 and these literally last like ten years.

TooManyMind

Aug 15, 2024 05:25 PM

1,560 Posts

Joined Oct 2013

TooManyMindAug 15, 2024 05:25 PM

1,560 Posts

Quote from adam empire

Maybe it's just me, but I keep a unit in my bedroom. Separate from the hardwired home system. It is well worth the $17 and these literally last like ten years.

Good idea. I will do that too.

jneset

Aug 15, 2024 07:14 PM

3,111 Posts

Joined Jan 2006

jnesetAug 15, 2024 07:14 PM

3,111 Posts

Quote from SDdawg

2 mos ago

https://slickdeals.net/share/iphone_app/fp/963753

Comes with needing to say only one from the pack is plug-in
I really didn't want a drywall screw battery unit

CheapyDinglebop

Aug 16, 2024 02:29 AM

329 Posts

Joined Aug 2021

CheapyDinglebopAug 16, 2024 02:29 AM

329 Posts

Someone keeps leaving notes for me to get one of these on my desk. I don't recognize the handwriting and live alone. The last two I bought were broken so I had to unplug them.

slickymarky

Aug 16, 2024 05:37 AM

302 Posts

Joined Apr 2012

slickymarkyAug 16, 2024 05:37 AM

302 Posts

Same price at Target also

SlimJimDanton1

Pro

Aug 16, 2024 11:01 PM

91 Posts

Joined Sep 2021

SlimJimDanton1

Pro

Aug 16, 2024 11:01 PM

91 Posts

Got the battery only version for $1 less. Going to put this in my camper van so no use for a wall plug

MasterRigger

Pro

Aug 18, 2024 12:18 PM

2,349 Posts

Joined Nov 2010

MasterRigger

Pro

Aug 18, 2024 12:18 PM

2,349 Posts

A must have for anyone running a generator

Mikee177

Aug 18, 2024 12:23 PM

155 Posts

Joined Jun 2011

Mikee177Aug 18, 2024 12:23 PM

155 Posts

Quote from CheapyDinglebop

Someone keeps leaving notes for me to get one of these on my desk. I don't recognize the handwriting and live alone. The last two I bought were broken so I had to unplug them.

This isn't Reddit…..

Pumpkinking27

Aug 18, 2024 03:41 PM

84 Posts

Joined Jun 2018

Pumpkinking27Aug 18, 2024 03:41 PM

84 Posts

Funny thing about this. I ordered this a while back, and they messed up at the warehouse. I ordered 1, but they sent me 1 case, which had 3 units in it.

OrangeBuffalo2670

Aug 18, 2024 04:45 PM

4 Posts

Joined Aug 2019

OrangeBuffalo2670Aug 18, 2024 04:45 PM

4 Posts

Quote from Pumpkinking27

Funny thing about this. I ordered this a while back, and they messed up at the warehouse. I ordered 1, but they sent me 1 case, which had 3 units in it.

Mail the left over 2 to me 🙃

Unregistered (You)

Home & Home Improvement Home Security & Safety Free Shipping For Members First Alert Walmart

Product Description:	Plug-In Carbon Monoxide Alarm with Battery Backup
Product SKU:	991729050
UPC:	29054018403

First Alert CO605 Plug-In Carbon Monoxide Detector w/ Battery Backup

$18

$36

Editor's Notes

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Editor's Notes

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First Alert CO605 Plug-In Carbon Monoxide Detector w/ Battery Backup

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Editor's Notes

Original Post

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Deal History Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price". Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.

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