First Alert SCO403 Carbon Monoxide and Smoke Detector, Combo Pack

Loading options...
Sold by Walmart.com

FREE shipping available

 on $50+ orders
 

Shipping

Type
Arrives
Cost
Value
Data unavailable
$4.97
Standard
Data unavailable
$6.97
Expedited
Data unavailable
$6.75
Rush
Data unavailable
$11.13

Pickup not available

 

Pickup

Want to pick up your package for free?
Walmart offers free pickup for most orders placed online - for many items as soon as today! Tell us where you are and we'll show you which Walmart stores and partner locations near you are available for package pickup.
 
See 1 more seller
Starting from $37.45
1 more seller from $37.45
| Learn more
  • $22.88
    +$4.97 shipping
    Walmart.com
    |
  • $37.45
    +$4.99 shipping
    Wayfair.com Wayfair.com
    Rating unavailable
    |

Other sellers on Walmart.com

In addition to Walmart.com items, we offer you products from our Marketplace Retailer partners to give you a wide range of choices.

  • Marketplace items are not returnable to Walmart.com or Walmart stores
  • Marketplace Retailers ship the items you buy from them
  • Tracking details (if available) can be found in your Walmart account
    CO400 Battery Operated Carbon Monoxide Alarm Features:Modern, compact design with no installation required.
  • Electrochemical sensor - the most accurate technology available.
  • Simple to use silence/test button; low battery warning; end-of-life timer.
  • Loud 85-decibel ala

Gifting note: This item ships in the manufacturer's original packaging. If intended as a gift, the packaging may reveal the contents.

Customers also considered
Customers also bought these products

About this item

Important Made in USA Origin Disclaimer: For certain items sold by Walmart on Walmart.com, the displayed country of origin information may not be accurate or consistent with manufacturer information. For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information.
    The First Alert SCO403 Alarm Combination Pack has both a carbon monoxide (CO) and smoke alarm. This combo pack gives you the basic protection from both smoke and carbon monoxide at an affordable price. Carbon monoxide is the leading cause of accidental poisoning deaths in America. Unfortunately, many people don't know they are suffering from CO poisoning until it's too late. That's why a carbon monoxide alarm is an excellent way to protect your family. This battery powered smoke alarm can detect the carbon monoxide you can't see, smell, or taste in the air. This pack combines the CO400 Battery Operated Carbon Monoxide Alarm with the SA303 Battery Operated Smoke Alarm to give you both smoke and carbon monoxide monitoring in your home.

About this item

Important Made in USA Origin Disclaimer: For certain items sold by Walmart on Walmart.com, the displayed country of origin information may not be accurate or consistent with manufacturer information. For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information.

    The First Alert SCO403 Alarm Combination Pack has both a carbon monoxide (CO) and smoke alarm. This combo pack gives you the basic protection from both smoke and carbon monoxide at an affordable price. Carbon monoxide is the leading cause of accidental poisoning deaths in America. Unfortunately, many people don't know they are suffering from CO poisoning until it's too late. That's why a carbon monoxide alarm is an excellent way to protect your family. This battery powered smoke alarm can detect the carbon monoxide you can't see, smell, or taste in the air. This pack combines the CO400 Battery Operated Carbon Monoxide Alarm with the SA303 Battery Operated Smoke Alarm to give you both smoke and carbon monoxide monitoring in your home.

    CO400 Battery Operated Carbon Monoxide Alarm Features:Modern, compact design with no installation required.
  • Electrochemical sensor - the most accurate technology available.
  • Simple to use silence/test button; low battery warning; end-of-life timer.
  • Loud 85-decibel alarm.
  • Convenient front battery access for easy replacement.
  • Operates on 2-AA Batteries. (included)
  • 5-Year Limited Warranty.
  • SA303 Battery Operated Smoke Alarm Features:
  • Ionization smoke sensing technology.
  • Single button silence/test feature tests sensor and horn and silences unwanted alarms for up to 15 minutes.
  • Loud 85-decibel alarm.
  • Swing-out front access battery drawer for easy battery replacement without dismounting unit.
  • Operates on 1-9V Battery. (included)
  • 10-Year Limited Warranty.

Explore this item

Specifications

Battery Type: Multiple Types
Multi Pack Indicator: No
Model No.: SCO403
Shipping Weight (in pounds): 1.0
Product in Inches (L x W x H): 5.37 x 2.0 x 5.38
Walmart No.: 1136778
Show

Comparison Table

Brand Image
Alarm Type
Alarm Type
Power Type
Power Type
Digital Display
Digital Display
Test/Silence Button
Test/Silence Button
Remote Control Silence
Remote Control Silence
Multi-Pack Available
Multi-Pack Available
You are viewing
First Alert Smoke and Carbon Monoxide Alarm Combo Package SCO403
 
Smoke Alarm & Carbon Monoxide Detector
Smoke Alarm & Carbon Monoxide Detector
 
2-AA Batteries and 1-9 Volt Battery
2-AA Batteries and 1-9 Volt Battery
 
 
Yes
Yes
 
 
First Alert Battery Powered Carbon Monoxide Detector CO400
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
Yes
Yes
 
 
Yes
Yes
First Alert Battery Powered Carbon Monoxide Alarm, 2-Pack CO400CN2
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
Yes
Yes
 
 
Yes
Yes
First Alert CARBON MONOXIDE ALARM, BASIC BATTERY, 6PK, COBATT-6
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
Yes
Yes
 
 
Yes
Yes
First Alert Battery Powered Carbon Monoxide Alarm, 72pc Display CO400-CQP-72
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
Yes
Yes
 
 
Yes
Yes
First Alert Battery Carbon Monoxide Detector with Digital Display CO410
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
Yes
Yes
 
Yes
Yes
 
 
First Alert Plug-In with Battery Backup Carbon Monoxide Detector with Digital Display CO615
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries, 120-V AC Plug-In
2-AA Batteries, 120-V AC Plug-In
 
 
Yes
Yes
 
 
Yes
Yes
First Alert Carbon Monoxide Plug-In Alarm with Battery Backup, 8-Pack Shelf Display CO605-8CSD-8
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries, 120-V AC Plug-In
2-AA Batteries, 120-V AC Plug-In
 
 
Yes
Yes
 
 
Yes
Yes
First Alert Plug-In with Battery Backup Carbon Monoxide Detector with Digital Display CO615
 
Carbon Monoxide Detector
Carbon Monoxide Detector
 
2-AA Batteries, 120-V AC Plug-In
2-AA Batteries, 120-V AC Plug-In
 
Yes
Yes
 
Yes
Yes
 
Yes
Yes
 
First Alert Talking Smoke Alarm and Carbon Monoxide Combination Detector SCO7CN
 
Dual Smoke and Carbon Monoxide Detector
Dual Smoke and Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
 
Yes
Yes
 
Yes
Yes
First Alert Battery Operated Combination Smoke/Carbon Monoxide Alarm with Voice Location, Shelf Display with 8 Twin Packs SCO7-8CSD-8
 
Dual Smoke and Carbon Monoxide Detector
Dual Smoke and Carbon Monoxide Detector
 
2-AA Batteries
2-AA Batteries
 
 
 
Yes
Yes
 
Yes
Yes
First Alert Explosive Gas and Carbon Monoxide Detector GCO1CN
 
Explosive Gas and Carbon Monoxide Detector
Explosive Gas and Carbon Monoxide Detector
 
1-9 Volt Battery
1-9 Volt Battery
 
Yes
Yes
 
Yes
Yes
 
 
Show

Manuals & Guides

Customer Reviews

Customer Reviews | 53 reviews | 4.4 out of 5

4.5 stars

53 reviews | 4.4 out of 5

4.5 stars

53 reviews | 4.4 out of 5

91%
Would recommend to a friend
5 stars
38
4 stars
8
3 stars
2
2 stars
2
1 stars
3
1-5 of 44 total reviews
91%
Would recommend to a friend

Age

Gender

Great pair of CO monitor and Smoke Alarm.
11/4/2012

Customer review by CoolRider7

5.0 stars 11/4/2012 by CoolRider7
by CoolRider7
Verified purchaser
Verified purchaser
Customer has been confirmed to have purchased the item from Walmart.

I installed this pair of smoke alarm and carbon monoxide detectors after ordering. First Alert is a very good brand and good quality. The price was really good. The smoke alarm did its job once whilw I was stir frying food in a very hot smoking wok and the smoke alarm went off as it should. The only minor problem was the lack of clear marking of which way to place the 9 volt battery in the battery door in the smoke alarm, but I figured it by observing that the hole size where the battery fits was 1 way only, when the battery is installed, It would help to have the battery terminal signs were clearly marked. Otherwise I am quite satisfied by the quality and appearance of the combo. To install them, you should measure the width of the holes and mark the wall accurately with a pen/pencil, so that you can install the anchors at the correct height and width, so a little thought while installing them is necessary. Would definately recommend this product and the price is very good.

Was this review helpful? (18) (1)
Thank you! You have successfully submitted feedback for this review.
Was this review helpful?
CoolRider7
Rego Park, NY
Would recommend to a friend? Yes
Age:45 - 54
Ownership:2 - 7 weeks
Gender:Male
Usage:Every day
Verified purchaser
Verified purchaser
Customer has been confirmed to have purchased the item from Walmart.
Excellent value for great protection.
12/26/2011

Customer review by rahjib1694

5.0 stars 12/26/2011 by rahjib1694
by rahjib1694

Although these are both just basic units, they are all that you really need. There is no purpose to have a digital display on the CO detector that many more expensive models have. It is usually placed where you cannot readily read it anyhow, plus, do you really need to know what the ppm count is? No, you just need it to work properly and have an alarm that is easily heard when the CO is at a dangerous level, so you can open the windows and get out of the area. They are small and inconspicuous, and having the detectors separate is actually better to cover the area more efficiently, since smoke and CO have different densities and the detectors should be at different levels for correct operation. Overall a very good deal on two basic, but highly effective detectors.

Was this review helpful? (29) (0)
Thank you! You have successfully submitted feedback for this review.
Was this review helpful?
rahjib1694
Camp Hill, PA
Would recommend to a friend? Yes
Age:35 - 44
Ownership:2 - 7 weeks
Gender:Male
Usage:Once per month
Great deal
1/18/2016

Customer review by Satisfied

5.0 stars 1/18/2016 by Satisfied
by Satisfied

2 in 1 combo convenient and cheap, for good quality. Combination makes me feel safer in home with children. Easy to install. Comes with batteries which made them easier to install immediately.

Was this review helpful? (1) (0)
Thank you! You have successfully submitted feedback for this review.
Was this review helpful?
Satisfied
Would recommend to a friend? Yes
4/28/2011

Customer review by LovinThePs3

5.0 stars 4/28/2011 by LovinThePs3
by LovinThePs3

My cousin is a lt. with the local fire dept. and he said that this product is fantastic. When I told him how much I paid for it he couldn't believe it. What a great product for a great price. If you need a smoke & co alarm, you can't go wrong with this package.

Was this review helpful? (41) (4)
Thank you! You have successfully submitted feedback for this review.
Was this review helpful?
LovinThePs3
Sylacauga, Al
Would recommend to a friend? Yes
Age:35 - 44
Ownership:2 - 7 weeks
Gender:Male
Usage:Every day
Everyone needs a Smoke Detector
1/2/2014

Customer review by TexasSister

4.0 stars 1/2/2014 by TexasSister
by TexasSister
Verified purchaser
Verified purchaser
Customer has been confirmed to have purchased the item from Walmart.

My sister was thrilled with the product once she received it. All, and I mean everything, was great on the shipping side until it reached Rolla, MO. then the whole experience went downhill from there! Multiple calls to Fed EX, employees too lazy (by their own admission) to scan the package so everyone would know where the package was at, to it's on the truck (so how do you know it's on the truck if it wasn't scanned?).. and it goes on.... So bottom line, DON'T use Fed EX if your package must go through or to ROLLA, MO. My sister says the product is great and is thankful to finally have it.

Was this review helpful? (4) (0)
Thank you! You have successfully submitted feedback for this review.
Was this review helpful?
TexasSister
Dallas
Would recommend to a friend? Yes
Age:45 - 54
Gender:Female
Verified purchaser
Verified purchaser
Customer has been confirmed to have purchased the item from Walmart.
1-5 of 44 total reviews See all
1-5 of 44 reviews

Customer Reviews | 53 reviews | 4.4 out of 5

Customer Reviews

Was this review helpful?
Was this review helpful?

Customer Q&A

Back
Questions & Answers 5 questions
1-3 of 5 questions

Ask a question

If you would like to share feedback with us about pricing, delivery or other customer service issues, please contact customer service directly.


Q&A tips and guidelines

Q&A Exchange Guidelines

When writing your question or answer, please follow these guidelines:

  • Do: Make sure your question is directly related to the product
  • Do: Be specific and provide as many details as possible
  • Do: Include the model number (if applicable)
  • Do: Write your question in English
  • Do Not: Include personal information (such as your full name)
  • All submitted questions and answers are subject to the terms set forth in our Terms and Conditions

We reserve the right not to post your question or answer if it contains any of the following:

  • Any information not related to the actual merchandise or topic
  • Obscenities, discriminatory language or other language not suitable for a public forum
  • Advertisements or “spam” content
  • Email addresses, physical addresses or other forms of contact information
  • Critical or spiteful comments on other questions or answers posted on the page or their authors
  • Any imagery that demonstrates incorrect use of the merchandise
  • Anything that Walmart deems to be inappropriate, at Walmart's discretion

Provide as many details as possible, including the model number (if applicable).

Remember: Don’t include personal information (such as your full name).


Preview Question

Walmart does not sponsor, recommend or endorse any third party product or service, or any customer ideas or advice.

Thank you.

Questions will be checked against our question guidelines and posted within five to seven business days.

1-3 of 5 questions See all
1-3 of 5 questions
Customers also viewed these products

Policies & Plans

See any care plans, options and policies that may be associated with this product.

Warranty Plan

Walmart Product Care Plans
A limited product warranty is included free for most items. With an optional Walmart Care Plan you can enhance the manufacturer's coverage from the date of purchase. Walmart Product Care Plans cover 100% of the cost for repair or replacement, including shipping charges for the exchange.

We'll show you Care Plan options and pricing at checkout if applicable, or go to www.walmart.com/careplans for more information.

Product warranty:  5 years See details

Supplier Warranty: 5 year warranty on CO Detector, 10 year warranty on Smoke Detector
Did you buy this in a Walmart store?  Get a warranty for it here.

Gifting plans

Gift options are not available for this item.

Pricing policy

About our prices
We’re committed to providing low prices every day, on everything. So if you find a current lower price from an online retailer on an identical, in-stock product, tell us and we’ll match it. See more details at Online Price Match.

Returns

Returns are easy at Walmart
Not happy with a purchase? No problem. We've made returning items as easy as possible. And, most purchases can be returned for free. Learn more about our Returns Policy.