Customer Reviews For The First Alert BRK Brands Hardwired Smoke Alarm with 10-Year Battery
Allen Luu
July 13, 2023First Alert 9120LBL BRK Brands Hardwire Smoke Alarm with 10-Year Battery
Received my order on 07/11/2023, Installed 4 Hardwired Smoke Alarm with 10 years battery. One Hardwired Combo Smoke and Carbon Monoxide with 10 years battery on 07/12/2023. Installation process pretty simple and straightforward. Now I have no longer need to replace batteries with every six months. Thank you First Alert product has made better choice for people live easier.
MICHAEL G
November 2, 2022Arrived quickly
And happened to have same mounting as my old alarms, was direct plug n play!
Rosemary M
September 21, 2022Very Happy
I have had First Alert alarms in my house w once I bought in 1996. Replacements are always super easy to get. Looking forward to confined business. Thank you!
Elton T
March 3, 2022Smoke Alarm
This alarm solves my problem of replacing batteries every year. I no longer can afford the danger of ladders. The ordering process was very easy and the alarm was received in record time considering the current supply chain issues. Excellent product from a great company. Highly recommend it.
Elton T
March 3, 2022Smoke Alarm
This alarm solves my problem of replacing batteries every year. I no longer can afford the danger of ladders. The ordering process was very easy and the alarm was received in record time considering the current supply chain issues. Excellent product from a great company. Highly recommend it.
Joseph Z
January 19, 2022Smoke alarm upgrade
We needed to replace all 12 wired smoke detectors in our house and these were a breeze. It took less than 5 minutes per unit and with 10 year batteries, it should be a while before I need to do this again. Thanks First Alert!
HARVEY B
December 29, 2021Smoke Alarm
Order delivered on time Excellent service
Stephen L
December 1, 2021Repllacements
Looking forward to installing these alarms, my old ones are reaching 10 years old. I hope that fit into the origin brackets.
Pedro R
October 29, 2021great
No need to climb ladders again to change batteries every 6 months. Product fitted perfectly on replacement smoke detector brackets.
VIRGINIA T
July 20, 2021Perfect choice
The First Alert BRK smoke detectors are the perfect solution to my situation. The builder installed smoke detectors that needed 9V battery changed yearly. Some ceilings are cathedral and I am in my 80s and live alone. No one was told the warranty was for 10 years. They began chirping all over the place. That's how we learned their warranty had expired. In searching for replacements we found these which have a 10 yr lithium battery so no yearly battery switch. Very simple to change out as well.
matthew s
July 20, 2021First Alert 9120-LBL
I did the install & testing myself...4 devices. Very good instructions. All was very easy. I needed to install a new power connector. Each one took ~15 minutes. *** I STRONGLY recommend researching your local fire code. I removed a chirping 10yr non-hardwired unit only 5 yrs old and found a junction box with wires. I called my local code office, and turns out I should have interconnected hard-wired units. Previous homeowner went cheap and not per code. Very glad I upgraded.
VIRGINIA T
July 15, 2021Perfect choice
The First Alert BRK smoke detectors are the perfect solution to my situation. The builder installed smoke detectors that needed 9V battery changed yearly. Some ceilings are cathedral and I am in my 80s and live alone. No one was told the warranty was for 10 years. They began chirping all over the place. That's how we learned their warranty had expired. In searching for replacements we found these which have a 10 yr lithium battery so no yearly battery switch. Very simple to change out as well.
Carol L
July 14, 2021Inexpensive insurance
Had these installed on every floor of my house. Although I have not had a fire !goodness, they did pick up excess smoke when my husband forgot to put the stove vent on when frying bacon. It was reassuring that they work
Carrie B
June 7, 2021Easy to install and works just like it saids.
Randy S
June 3, 2021Happy!
Product as stated. Quick, free shipping. Easy to install.
David M
June 1, 2021Shipped promptly
David M
June 1, 2021shipped promptly
Kim M
May 18, 2021Easy to install. Also like the 10 year battery so I don't have to replace batteries every year.
Dale P
May 4, 2021Smoke alarm review
As promised.
michael p
March 29, 2021Review
Pleased to have 10 year lithium product which does not require battery changes every year. Easy ordering and prompt delivery.
- You may not be holding the test button down long enough. Try holding it down for up to 10 seconds (20 seconds on photoelectric models) .
- Your battery may not be installed properly or snapped all the way in place. Even if the alarm sounded briefly when the battery touched the terminals, you still need to make sure it is snapped securely in place. If the battery is loose, in cannot power the smoke alarm properly. After installing new batteries, be sure to test your smoke detector.
- Your AC power may not be on. AC and AC/DC units will have a power indicator light (red or green) that shines continuously when they are receiving electrical power.
- If you have a 10-Year model, the smoke alarm may not have been properly activated. If the tab broke away before the alarm was activated, you can use a toothpick to move the switch over to test the alarm.
- There may be insufficient battery power, try new batteries.
- Problems with voltage or insufficient electrical power (brown out) may cause a continuous weak sounding alarm. For AC or AC/DC models, temporarily disconnect power at the service panel until the brown out is over. If you do not restore the AC power, your smoke alarms cannot warn you of a fire.
- Incompatible warning device. If an incompatible alarm or auxiliary device is linked into a series of AC or AC/DC smoke alarms it may cause the system inadvertently go off.
Hardwired Smoke Alarm with Battery Backup
The First Alert 9120LBL Hardwired Interconnected Smoke Alarm with Lithium Battery-Backup is a great choice when it comes to affordable smoke alarms. In the event of a power outage, this smoke alarm is equipped with a 10 year lithium battery back-up.
Ionization Sensor Reliably Detects Flaming Fires
The First Alert 9120LBL Hardwired Smoke Alarm with Battery Backup comes equipped with an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire. The sensor is optimized to detect flaming fires, such as those caused by paper, kitchen grease, and other fast-combusting materials. This smoke alarm also implements Smart Technology to drastically reduce the number of nuisance alarms triggered.
Gasket-less for Easy Installation
To facilitate hassle-free installation, this smoke alarm features a perfect mount system that includes a base and a mounting bracket. This keeps the alarm secure over a wide rotation range that allows for true alignment.
Latching Alarm Indication
In addition to functioning independently, this smoke alarm can also integrate with up to 12 other First Alert or BRK hardwired alarms for coverage of larger spaces. It also integrates with up to six other compatible devices, such as bells, horns, and repeaters. If one alarm in the series is triggered, they will all sound. The alarm features a latching indicator to identify which unit triggered the alarm, alerting you to the area of danger.
10-Year Lithium Battery Backup
The First Alert 9120LBL Hardwired Interconnected Smoke Alarm features a built-in 10-year lithium battery backup that provides continuous power for the life of the detector. An end-of-life timer lets you know when the device should be replaced.
First Alert BRK Brands Hardwired Ionization Smoke Alarm 9120LBL
