First Alert CO400 Battery Powered Carbon Monoxide Detector

First Alert CO400 Battery Powered Carbon Monoxide Detector - image 1 of 4First Alert CO400 Battery Powered Carbon Monoxide Detector - image 2 of 4First Alert CO400 Battery Powered Carbon Monoxide Detector - image 3 of 4First Alert CO400 Battery Powered Carbon Monoxide Detector - image 4 of 4
First Alert CO400 Battery Powered Carbon Monoxide Detector - image 1 of 4
$21.99When purchased online

About this item

Highlights

  • Keep your family safe with this easy to use, battery operated carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
  • A loud 85-decibel alarm sounds when CO levels reach dangerous levels
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • 5-7 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

Specifications

Dimensions (Overall): 3.38 Inches (H) x 4.87 Inches (W) x 1.56 Inches (D)
Weight: .45 Pounds
Features: Silences Unwanted Alarms
Package Quantity: 1
Requires Hardwired Installation: No
Battery: 1 9-Volt Alkaline, Required, Included
Warranty: 7 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 11134898
UPC: 029054013101
Item Number (DPCI): 085-14-0248
Origin: Imported

Description

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to monitor your space for a carbon monoxide threat. The battery-powered design doesn't require an electrician; simply insert the included 9-volt battery, and the carbon monoxide detector is ready to go.

The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat.

Because CO evenly distributes itself, it's important to have a CO detector on every level and in every bedroom of your home. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it's time to replace the device.

If the item details above aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 8.42 inches length x 6.69 inches width x 2.71 inches height
Estimated ship weight: 0.47 pounds

Return details

This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.

Q: Will this carbon monoxide detector work even if battery is out?

submitted by Bubba - 4 years ago
  • A: Thank you for your question. This is a battery powered unit that will not function without batteries.

    submitted byFirstAlertProductExpert - 1 year ago
    Brand expert
  • A: No. It has to have 9v in it

    submitted by - 2 years ago

Q: what is the lowest amt it will detect?

submitted by Cilla - 3 months ago
  • A: Thank you for your question. If the alarm is exposed to 400 ppm of CO, It must alarm between 4 and 15 minutes. If you have any additional questions, please don't hesitate to reach out directly to our Support Team at First Alert at at 1 (800)-323-9005.

    submitted byFirstAlertProductExpert - 2 months ago
    Brand expert

Q: Does it works when ice fishing in tents?

submitted by allaboutevecapricorn - 1 year ago
  • A: Thank you for your question. We recommend not placing in areas where temperature is colder than 40˚ F (4˚ C) or hotter than 100˚ F(38˚ C).

    submitted byFirstAlertProductExpert - 1 year ago
    Brand expert

Q: What size batteries does it take?

submitted by Tina R - 3 years ago
  • A: This particular model takes 9 volt

    submitted by - 2 years ago

Q: How does this attach to the wall?

submitted by JH - 4 years ago
  • A: Two screws in the wall and it slides onto them

    submitted by - 2 years ago
4.4 out of 5 stars with 123 reviews
89% would recommend
39 recommendations
value: 4.12 out of 5
quality: 3.81 out of 5

Good!

5 out of 5 stars
Would recommend
suzybluiis - 2 months ago
This was the exact replacement and came with the battery, so it was very easy to put up quickly.
quality: 5 out of 5
value: 5 out of 5
1 guest found this review helpful. Did you?

Easy to use

5 out of 5 stars
Would recommend
Annie57 - 6 months ago, Verified purchaser
Battery operated and easy to relocate as needed.
Did you find this review helpful?

2015-2022

5 out of 5 stars
Agnn - 7 months ago
Just wanted to post regarding the life of the unit. It started chirping 5 times the other night. I got it a new battery and same thing. The back states that 5 chirps means end of product life, so that feature works. Product is marked 2/2015 and it chirped a few days ago and I think had a battery in it the majority of that time. No issues with it while it was working. I couldn’t even say if I changed the battery on it (which is also a feature) so it isn’t a battery-sucker.
value: 5 out of 5
quality: 5 out of 5
5 guests found this review helpful. Did you?

Works well

4 out of 5 stars
Would recommend
DetroitDi - 10 months ago, Verified purchaser
Alerted me when I didnt expect it to go off. And it was justified.
quality: 5 out of 5
value: 5 out of 5
9 guests found this review helpful. Did you?

Nice and small.

5 out of 5 stars
Would recommend
good buy - 1 year ago, Verified purchaser
Needed to replace an old CO detector and saw this one online. Hope it's as reliable as my old one.
value: 5 out of 5
quality: 4 out of 5
2 guests found this review helpful. Did you?

Does not work

1 out of 5 stars
Would not recommend
Savoy26 - 1 year ago, Verified purchaser
Only works if you hold the battery in tightly by hand.
1 reply from FirstAlertProductExpert team - 1 year ago
Thank you for your feedback. We apologize for any inconvenience. We’re here to help. We would like to talk to you further to better understand your experience. Please don’t hesitate to reach out to us at First Alert at 1 (800)-323-9005. We look forward to hearing from you.
value: 1 out of 5
quality: 1 out of 5
2 guests found this review helpful. Did you?

Great, but wish they still used AA batteries!

5 out of 5 stars
fischnet - 1 year ago, Verified purchaser
Purchased to replace same units from 8 years ago. Always reliable, but wish they still used always cheaper and always on hand, AA batteries instead of 9 v.
quality: 5 out of 5
value: 5 out of 5
5 guests found this review helpful. Did you?

Proctoer

5 out of 5 stars
Would recommend
Shatta - 1 year ago
Noting it works well
quality: 5 out of 5
value: 5 out of 5
Did you find this review helpful?

(no review title)

5 out of 5 stars
Would recommend
Knicked1 - 2 years ago, Verified purchaser
The carbon monoxide detector works fine and was easy to install, although initially I had a little problem opening the battery compartment.
quality: 5 out of 5
value: 5 out of 5
3 guests found this review helpful. Did you?

(no review title)

5 out of 5 stars
Would recommend
HippieHae - 2 years ago
It does the job I guess! Thankfully we haven’t had it go off, but we did test it and it’s very loud.
value: 5 out of 5
quality: 5 out of 5
3 guests found this review helpful. Did you?

Read the description thoroughly .

3 out of 5 stars
Donna - 3 years ago, Verified purchaser
We were replacing a plug in monitor, and that was what I thought I was purchasing. We will keep this one, but prefer the other type.
1 reply from FirstAlertProductExpert team - 2 years ago
Thank you for your feedback. We apologize for any inconvenience. If you have any additional questions or concerns, please don’t hesitate to reach out to us at reviews@firstalert.com or contact our Support Team at 1 (800)-323-9005.
4 guests found this review helpful. Did you?

Replacement

4 out of 5 stars
Would recommend
Free Again - 3 years ago, Verified purchaser
I purchased this to replace the same brand that had its effective life end. Disappointed that the noontime screws are in different location battery is now a less common 9 volt and not easily accessed from the front.
quality: 4 out of 5
value: 4 out of 5
6 guests found this review helpful. Did you?

(no review title)

5 out of 5 stars
Would recommend
Paulie C - 3 years ago, Verified purchaser
Exactly what i needed a good buy good price thank you
quality: 5 out of 5
value: 5 out of 5
2 guests found this review helpful. Did you?

Important to have Co2 alarms in your home

5 out of 5 stars
Would recommend
JSmith - 3 years ago, Verified purchaser
Excellent price & fast, free delivery!
value: 5 out of 5
quality: 5 out of 5
2 guests found this review helpful. Did you?

(no review title)

5 out of 5 stars
Would recommend
it works - 3 years ago, Verified purchaser
Absolutely easy to install, works perfectly.
quality: 5 out of 5
value: 5 out of 5
6 guests found this review helpful. Did you?

long lasting

5 out of 5 stars
Would recommend
Lib - 3 years ago, Verified purchaser
Replaced my other that had stopped working...it was new, 7 years ago. Decided to stay with this product.
quality: 5 out of 5
value: 5 out of 5
3 guests found this review helpful. Did you?

(no review title)

3 out of 5 stars
customer - 3 years ago, Verified purchaser
They moved the position of the mounting screws. I purchased this model in hopes that I can just remount it on the prior screws. However, I had to drill new holes in my wall instead. And, the battery compartment is now trickier to open.
9 guests found this review helpful. Did you?

(no review title)

5 out of 5 stars
Would recommend
Satisfied Customer - 4 years ago, Verified purchaser
Seems to be doing what is should - or at least I hope so - bought it because we had replaced stove in kitchen with used stove, and wanted to be sure it was hooked up properly. No alarms given off so far ;,)
3 guests found this review helpful. Did you?

(no review title)

5 out of 5 stars
Would recommend
Satisfied customer - 4 years ago, Verified purchaser
Great product for a great price!
quality: 5 out of 5
value: 5 out of 5
1 guest found this review helpful. Did you?

Easy Set Up

4 out of 5 stars
Would recommend
Dee - 4 years ago, Verified purchaser
It was so easy to set up. Love it
quality: 4 out of 5
value: 4 out of 5
1 guest found this review helpful. Did you?

Get top deals, latest trends, and more.

Privacy policy

Footer

About Us

About TargetCareersNews & BlogTarget BrandsBullseye ShopTarget's Coronavirus ResponseSustainability & ESGPress CenterAdvertise with UsInvestorsAffiliates & PartnersSuppliersTargetPlus

Help

Target HelpReturnsTrack OrdersRecallsContact UsFeedbackAccessibilitySecurity & FraudTeam Member Services

Stores

Find a StoreClinicPharmacyOpticalMore In-Store Services

Services

Target CircleRedCardTarget AppRegistrySame Day DeliveryOrder PickupDrive UpFree 2-Day ShippingShipping & DeliveryMore Services
PinterestFacebookInstagramTwitterYoutubeTiktokTermsCA Supply ChainPrivacyCA Privacy RightsYour Privacy Choices - CAInterest Based Ads