

🔥 Stay ahead of danger with smart, seamless protection ⚡
The BRK First Alert 9120BFF is a hardwired smoke detector featuring a 120V power source with a 9V battery backup for continuous operation. Equipped with an ionization sensor, it detects fast flaming fires and sounds an 85-decibel alarm. It supports interconnection with up to 12 compatible devices for whole-home alerts, includes tamper-resistant mounting, and offers a 10-year limited warranty, making it a trusted, professional-grade safety solution.







| ASIN | B00O8MVW3U |
| Alarm | Audible |
| Assembled Diameter | 5.6 Inches |
| Batteries | 1 9V batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #960 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Smoke Detectors & Fire Alarms |
| Brand | BRK |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (18,938) |
| Cutting Diameter | 5.6 Inches |
| Date First Available | June 1, 2006 |
| Global Trade Identification Number | 00029054015327 |
| Included Components | smoke detector, batteries, mount |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.8 ounces |
| Item model number | 9120B |
| Manufacturer | First Alert |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Operating Humidity | 10-95% RH |
| Part Number | 9120BFF |
| Pattern | Filter |
| Power Source | Battery Powered |
| Product Dimensions | 5.6"D x 5.6"W x 2.2"H |
| Sensor Type | Ionization |
| Size | 1-Pack |
| Style | 9120BFF |
| Type of Bulb | LED |
| UPC | 029054015327 |
| Voltage | 120 Volts |
| Warranty Description | 10 Year Limited |
S**N
Great alarm at a generic price!
It took me a long time to decide which smoke detectors to buy for my house, this model or the brand made by Kiddie. My house already had the Kiddie brand and this would mean a much faster replacement for all the smoke detectors in my house. Over time the Kiddie brand tended to chirp a lot and that drove everyone in the house crazy, especially my older and wonderful dog. My daughter said a candle lit in her room also set off all the smoke detectors in our house. If you go to the store you will find these labeled "BRK" with the words "First Alert" in smaller letters underneath and they come in a yellow and black box. It is unfortunate. Yellow and black packaging reminds me of generic food items back in the 70's and these items had a reputation for being below par. If I did not know what I was looking for I would have passed over these units in favor of something else, and I also noticed that BRK and First Alert puts their more expensive models in fancy and beautiful packaging. Thus, I fear that this company intentionally brands this "entry level" smoke detector in yellow and black to dissuade people from buying it and moving up to the more expensive models. I bought the contractor pack of this item as well as three single units to replace the nine smoke detectors in my house. All of these come with a free battery. I knew I would have to take down the old detectors, take down the mounts, and disconnect the old wiring in order that I be able to put in the new mounts and the new wiring for this smoke detector. It is a job that takes about 10 minutes at the most to completely swap out each of the units. Remember to shut off the circuit breaker! The alarm itself looks great. I like the design a lot better than the flat plastic orb. Once the new wiring harness is connected and the mount is secured to the ceiling, the new detectors snap easily into place for the wiring and you twist it onto the mount. The battery compartment is on the side and although the door for the battery looks cheap, all held up well and none broke. The alarm itself is easy to test, push the big button, and the alarm is loud enough to get anyone's attention. So far, cross our fingers, there have been no errant cheeps and no false alarms. Now to give Kiddie credit our old alarms were nearing the end of their expected lifespan so the new ones would have probably worked as well. I admit it, I went for the name brand!
R**E
Good buy with a fair price
The fire detectors came fast and was easy to installed. Ended replacing two old detectors working better than the originals. Good quality. Another good thing is that the provided battery has charge. I had previous experience with other Smoke Detectors that come with weak or discharged batteries. Good buy and a fair price.
M**S
Ease of Installation
This was a replacement for the same smoke detector I had installed approximately 10 years ago. All I did was climb the ladder, unplugged the old and plugged the new one in. Took 5 minutes and works perfect.
B**L
Smoke Detector replaced easy
I bought this as a replacement for one that was at end of life (Lasted 8 years). Easy to install and works great! I did not notice it was not carbon monoxide detector also. So make sure you check that if you want to monitor both smoke and Carbon Monoxide. Other then that, it fits on the same bracket as my old model SC9120B that is obsolete. Uses the same 120vac connector as the old. Interconnects with the my other 4 original monitors that still work. So if you have one that is NG, (my old one, chirped 3 times every 5 minutes or so even after cleaning and replacing battery) you can just replace that one and be OK.
M**M
Perfect plug and play replacement
Great product. Replaced an original installed 20 year old one hardwired into my house that was malfunctioning. Plugged right into the existing wiring and the existing mounting bracket and no more alerts. Included 9v battery.
G**)
great product
great product easy to put up and work great
C**K
Great replacement for old outdated detectors
Super easy install, look great and worked out of the box!
P**E
My family is safe
Great product, at a great price.
C**N
L’article est tel que décrit. Facile à installer. Je recommande.
G**R
Works good so far :)
G**4
Très bon prix.
A**T
Efficace
A**.
Good detector
Trustpilot
2 days ago
3 weeks ago