First Alert BRK 9120B Hardwired Smoke Alarm with Battery Backup (3)
Details
- BrandFirst Alert
- Style3 Units
- Power SourceCorded Battery
- Color3 Units
- Item Weight16 ounces
- Sensor TypeIonization
Description
🚨 Stay ahead of danger with fail-safe, smart protection
- POWERFUL ALERT - 85dB alarm loud enough to wake even the deepest sleepers
- INSTANT CONTROL - Single button silence and test for hassle-free maintenance
- SECURE RELIABLE - Tamper-resistant locking pins prevent accidental disarming—peace of mind guaranteed
- TRIPLE PACK VALUE - Three units included for comprehensive home coverage and seamless integration
- UNINTERRUPTED SAFETY - 120V hardwired with 9V battery backup ensures protection even during outages
The First Alert BRK 9120B is a hardwired smoke alarm system featuring tamper-resistant locking pins, a loud 85dB ionization sensor alarm, and a 9V battery backup to maintain functionality during power outages. Sold in a convenient 3-pack, it offers reliable, continuous home safety with easy single-button testing and silencing.
Specifications
| Brand | First Alert |
| Style | 3 Units (9120B) |
| Power Source | Corded Electric, Battery Powered |
| Color | 3 Units (9120B) |
| Item Weight | 16 ounces |
| Sensor Type | Ionization |
| Number of Items | 1 |
| Manufacturer | First Alert |
| UPC | 029054246707 |
| Item Weight | 1 pounds |
| Package Dimensions | 10.35 x 9.92 x 6.06 inches |
| Batteries | 1 9V batteries required. |
| Is Discontinued By Manufacturer | No |
| Size | 3 Units (9120B) |
| Item Package Quantity | 3 |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
Reviews
H**S
Battery back up
I have 6 of these in my home and they started malfunctioning so I bought a package of three and changed the one I thought was causing the issue. Problem solved! The detector works flawlessly and fit perfect. I did not have to remove the old housing I just simply unplugged the old one and plugged the new one in and we re good!
A**E
Great product
I bought these to replace 15-year-old smoke detectors they were very easy to install and are working great
R**H
great value
best price for a detector
D**N
Bought to replace the ones in my home
One of the detectors in my house started to go out. Chirping non stop even when moved to different locations in my home. These worked perfectly in the ceiling mounts so no trouble with installation. Replaced all three in my home at the same time
J**N
As advertised
Came quickly. Exactly as ordered.
C**N
Not returnable
Just fyi the fine print says it but I missed it.. they’re not returnable. Wife decided that she wanted a different model so I’m stuck with these.
M**Y
Easy to install.
Easy to install.
W**I
False Alarm
My house smoke detectors went off after to use 17 years. I have purchased 3 units from Amazon a month ago. My husband had installed after we received, but after 2 weeks, all of them started signaling false alarms in the middle of the night and very early morning twice for no reason. We have to remove all of these from the house. Please avoid to buy these products because it cannot be returned and waste your money.
Common Questions
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1 month ago
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