First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
- Brand:
- First Alert
- Model Number:
- 1039935
- UPC:
- 029054019653
- EAN:
- 0029054019653
- Walmart SKU:
- 630578226
Current pricing at $36.52 reflects recent market activity, running 0.0% below the 90-day average.
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$64.99 | |
|
Lowest Price
|
$28.78 | |
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Most Recent Price
|
$62.99 |
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$36.52 | |
|
Lowest Price
|
$12.00 | |
|
Most Recent Price
|
$36.52 |
Tracking History: We have tracked First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery since 11/26/2022. The most recent price update was on Jan 28, 2026.
Price Range: Over the past 90 days, the price has ranged from $12.00 (lowest on 6/22/2024) to $36.52 (highest on 12/16/2025). The average price during this period is $24.65.
Current Trend: No Walmart.com pricing data available for analysis.
Customer Insights: Rated 4.6/5 from 411 reviews.
I received product reimbursement in exchange for my honest review. I bought the First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery. I've only had it for 10 days so my review is solely based off of packaging, installation, and test features. The unit has an easy mounting bracket, but the battery compartment and installation is annoying and difficult. You really have to pry the 9V battery into and out of the holder. It's nice that the product comes with the 9V battery. The unit is loud and all of the tests ran perfectly. I like that it's a smoke and carbon monoxide detector just for simplicity. The box says it has an end of life warning and to replace every 10 years. My item was made on July 14, 2021, but not installed until October 21, 2022. I would make sure you write the installation date on the back of the alarm. First Alert is a well known company that has been around since 1958. I have faith that this unit will continue to work properly over the next few years.
Instructions are lacking valuable information. Unit came with a 9V battery and no snap connector leads to attach it to. Not only was the battery difficult to fit into the compartment, I had to find a video on Youtube to determine the correct orientation of battery to achieve proper function.
I received product reimbursement in exchange for my honest review. This alarm was very easy to install. I like how it is both a smoke detector and carbon monoxide detector. I tested it once the battery was in and it was installed and it worked great. I hope to never have to hear this alarm going off in my house unless it's being tested. I also like how this comes with the battery; that is very convenient!
it goes off randomly mostly at night ive had my home checked a few times for carbin monoxide because of this alarm would not buy this again
I received product reimbursement in exchange for my honest review. The smoke and CO alarm is little on the bulky side but it is easy to install and use. The product comes with a battery so it's ready to use of the packaging. One of the good things about this product is it is both a smoke alarm and a carbon monoxide alarm, saves me from having two separate ones. It's just been a few days of usage, I hope it lasts long.
I have purchased this product in the past. We had carbon monoxide in our house and the detector went off like it was supposed to and most likely saved our lives. My old ones are several years old and still work fine. I just thought it was time to replace them. So I decided to purchase the same ones. I have three of them throughout my house. I highly recommend.
Had to remove old bracket and remount the new one included with this device, even though it looks the same. Though I was able to secure the new bracket without replacing the existing drywall anchors or screws. So the operation was quick. It was physically challenging to insert the included battery. I thought I was doing something wrong, but it does snap into place with a bit of force. Otherwise an easy installation process. Manufacture date was just 2 months ago. So, relatively fresh. This is important since the device chemistry expires in 10 years. Though, not exactly sure what happens to the effectiveness just after 10 years.
Detects smoke **and** **CO** (Carbon Monoxide) which is (a) poisonous (b) odorless. Found a good selection of smoke detectors and quickly narrowed down to smoke CO detectors. Competitive price and fairly quick shipping. Overall, very satisfied. Solid four star rating.
I received product reimbursement in exchange for my honest review. The first alert smoke and carbon monoxide alarm is a great purchase. It is dependable and simple to use. The package even includes a 9 V battery which also makes it convenient. I have tremendous peace of mind with this installed in my home.
I received product reimbursement in exchange for my honest review. Easy to use and easy to install. I replaced this with my old smoke detector that did not have the carbon monoxide detector in it. I feel much safer now having this in my house. I need to get more!
Detailed price history for the past 90 days
No Walmart.com pricing data available for analysis.
Third-Party Sellers prices have ranged from $47.97 (Sep 10) to $62.99 (Oct 11) over the past 90 days. Current price is close to the 90-day average of $58.08.
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| $62.99 | $+0.00 | +0.0% | |
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| $56.99 | $+9.02 | +18.8% | |
| $47.97 | $-9.02 | -15.8% | |
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| $59.90 | $-0.09 | -0.2% | |
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| $59.90 | — | — |