First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup

First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup

Marsoni

M251S

$13.99

Get it in 3 business days with 1 day shipping. Friday, May 29

First Alert BRK 9120B 120V Smoke Alarm, 9V Battery BackupDesigned to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires. Features Ionization Sensor Reliably Detects Flaming Fires: The First Alert Hardwired Smoke Alarm with Battery Backup comes equipped with an ionization sensor to provide the earliest possible warning of

Easy Shipping

Quick Dispatch:

Your First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup ships.

Need Help?
Questions about First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I had to order this in an emergency. To put it in brief words, I live in a two level studio unit. My bedroom TV fell backwards off the bureau accidentally and down the stairs to its demise. Putting this together was no problem, instructions were thorough and easy. It came with several bars that connected together smoothly and an Allen key for the brackets and screws for the feet. I did one less horizontal bar on top and bottom so it could fit, which was great because with all of them on it was too long. However I ran into the difficulty of the horizontal bars popping out of the brackets during the last stages, but eventually got it done. I was also looking for a specific type of divider where I could adjust the feet so I could tuck it in between the dresser and banister. Glad I made this purchase.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 19, 2026

Verified Purchase

Interloper

Carnegie, US

★★★★★ 1

You Get What You Pay For! A Piece Of Junk!

Size: 1 Panel

Flimsy and a piece of junk. Don’t waste your money. Assembly is a pain because it is so flimsy. Divider is thin. You can see right through it. Very wobbly.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 25, 2026

Verified Purchase

JAMES HAYES

Louisville, US

★★★★★ 4

Instructions are useless

Size: 1 Panel

The instructions are poorly written and not very helpful. The divider itself is easy to assemble, and honestly, it would’ve been quicker if I had skipped the directions altogether. Once put together, though, it works as intended.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 20, 2026

Platinum Motif

Grantham, US

★★★★★ 5

This was the best

Size: 1 Panel

This divider is great for creating a little privacy or separating a small area without taking up much space. The fabric is thick enough to block visual clutter, and the frame is lightweight but stable once it’s opened. It folds flat for storage, which is convenient if you only need it occasionally. Assembly was straightforward, and it was the perfect size. It’s a practical piece for apartments, studios, or home offices where you want a quick, temporary partition.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 14, 2026