Ratings & Reviews for First Alert BRK Hardwired (with Battery Back-Up) Ionization Smoke detector 6 -Pack

4 Out of 5 Good

Purchased five of these on May 1, 2024 and installed, replacing five originally installed in my home when built in 2007! It was time! However, one of these detectors started its annoying beeping in October 2025. I replaced the battery but that failed to silence it so I purchased a replacement and installed it in November 2025. I think I had a bad detector and am attempting to see if the manuafacturer will refund me per the warranty info.

Make your home safe

Easy to set up, work Great

Buy instead of single. Singles cost more

Good price

Overly Sensitive Junk

Do you want to be alerted to a fire? Do you want to be alerted to a boiling pot of water 75 feet away from the nearest smoke detector? Do you want to be alerted if someone a mile down the road has a bonfire? Then the 9120B is the smoke detector for you! Pure and utter garbage that triggers constantly for no reason at all (yes, they are new date codes, yes they have been cleaned.)

Quick and Easy

Easy installation

Easy to install

Easy to install, affordable

Good value

Good value. They've been installed. I pray we don't ever need to use them. They look nice.

Out of date when purchased

Purchased in Oct. 2024. Installed shortly after. Within a few weeks, two of them have already had to have their battery replaced. Likely more will soon. Called First Alert. She had me check the manufacture date on the detector, which is Feb. 2023. So they were already a year and a half old when purchased, which I did not know at the time. She said that's why the battery is already needing replacement, and likely the others will as well. No mention from her for compensation for having to replace ...

Good product

Fit my existing base, surprised that it came with battery, which I still replaced with new Duracell.

Replaced old ones with same brand

Very good product. Last ones, same brand, lasted 12 years.

Replace with fresh batteries before installing

I would like the included battery to have a longer expiration date.

Check inside the box

Electrical wires for 4 of the 6 detectors were not included. Batteries had an expiration date less than 2 years from date of purchase.

Happy with purchase

I wanted to have all matching smoke detectors and I needed four. I had to use a handyman and it took him less than 30 minutes so have them do other jobs to make it worthwhile. Change every 5 years to be safe

Smoke detectors

Exact replacement, fit perfectly, good price

Great product, works great

Great product and works great. In addition, all of my smoke detectors in my house are the same! Sure was easy to order online and pickup at the store in the lockers!

Smoke alrms

These were perfect to replace my original units. best to buy 6 at a time