BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

Compare price from $10.00 ~ $647.04

Compare Buying Options

Sort by Lowest Price	Item price	Delivery
Marshall E. Campbell Co. 120VAC Dual Ionization Smoke Alarm	$10.49	Delivery date & cost shown at checkout

ULE Group 120V AC/DC Smoke Alarm	$10.72	Delivery date & cost shown at checkout

City Electric Supply BRK 9120B AC/DC Smoke Alarm with 9V Backup Battery 120 VAC	$11.72	Delivery date & cost shown at checkout

Beverly Hills Lighting 9120B SMOKE DETECTOR W/ BAT-B/U	$13.95	Delivery date & cost shown at checkout

World Electric BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup	$14.36	Delivery date & cost shown at checkout

Codale BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup	$15.35	Delivery date & cost shown at checkout

Cooper Electric BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup	$15.89	Delivery date & cost shown at checkout

Orange County Building Materials Smoke Alarm 9120B Wired/Batt AC/DC	$15.99	Delivery date & cost shown at checkout

Frankfort Hardware FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White	$15.99	Delivery date & cost shown at checkout

Appliance Parts Company Brk Electronics Smoke Alarm 120V Battery Back 9120B	$16.95	Delivery date & cost shown at checkout

Ashby Lumber Smoke Detector, Wired, 120V AC/DC	$16.99	Delivery date & cost shown at checkout

Sunco Lighting Sunco First Alert BRK Hardwired Ionization Smoke Alarm	$16.99	Delivery date & cost shown at checkout

BuyRite Electric First Alert 9120B Hardwired Ionization Smoke Alarm with Battery Backup BY BUYRITE ELECTRIC	$17.25	Delivery date & cost shown at checkout

Smoke Alert Home Fire Safety First Alert 9120B Hardwired Ionization Smoke Alarm Battery Backup	$18.95	Delivery date & cost shown at checkout

Smoke Alert Home Fire Safety BRK First Alert SMI100-AC (1046836) Hardwired Ionization Smoke Alarm Battery Backup (Formerly 9120B)	$18.95	Delivery date & cost shown at checkout

Voomi Supply BRK 9120B Wire-In Smoke Alarm 120V AC 60Hz with Backup 9V Battery	$19.79	Delivery date & cost shown at checkout

Amazon.com BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack	$19.87	Delivery date & cost shown at checkout

eBay BRK First Alert 9120B/1046836/SMI-100-AC Smoke Detector AC Powered w/battery \| Features with Battery Backup \| Smoke Alarm \| White \| 0689744101497	$20.25	Delivery date & cost shown at checkout

eBay Brk First Alert 9120b Smoke Detector, We Have 11 Available	$35.00	Delivery date & cost shown at checkout

Target First Alert 9120B-AC BRK, Hardwire Interconnect Smoke Alarm with Battery Backup	$20.99	Delivery date & cost shown at checkout

Hancock Lumber First Alert Ionization Smoke/Fire Detector Hard-Wired W/Batt Back-Up 1039808 Disco	$21.99	Delivery date & cost shown at checkout

Ramsey Hardware & Paint Ionization Smoke Alarm Hardwired with Battery Backup for Continuous Protection	$29.99	Delivery date & cost shown at checkout

Radwell.com 9120B BRK ELECTRONICS - Fire Safety & Fire Alarm Supplies	$30.00	Delivery date & cost shown at checkout

GoVets.com Qty 2 \| First Alert Smoke & Carbon Monoxide Alarms, Alarm Type: Smoke , Sensor Type: Ionization , Mount Type: Ceiling, Wall ,	$46.58	Delivery date & cost shown at checkout

Sears thinkstar First Alert 9120B Smoke Detector & Alarm, Ac Powered With Battery Backup	$52.34	Delivery date & cost shown at checkout

Sears thinkstar Brk 9120Lbl Hardwired Smoke Detector With Battery Backup	$53.30	Delivery date & cost shown at checkout

Conservation Mart First Alert BRK Hardwired Ion Smoke Alarm with 9V Carbon Zinc Battery Backup 9120B	$57.34	Delivery date & cost shown at checkout

Westway Electric Supply The BRK 9120B6CP is the special contractor pack offering of our best selling smoke alarm. The 9120B is a hardwired, 120V AC 60Hz single and/or	$66.90	Delivery date & cost shown at checkout

Instacart First Alert White Hard-Wired Smoke Detector Alarm With Battery Backup - 1 each	$101.90	Delivery date & cost shown at checkout

Uber Eats Brk Smoke Alarm With Battery Backup	$109.03	Delivery date & cost shown at checkout

Shipt First Alert BRK Hardwired (with Battery Back-up) Ionization Smoke Detector (6-Pack)	$113.19	Delivery date & cost shown at checkout

AliExpress 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 12-Pack	$220.30	Delivery date & cost shown at checkout

Electric Bargain Store BRK Electronics First Alert 9120B-48P 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm - Box 48-Pack (Upgraded to SMI100-AC)	$647.04	Delivery date & cost shown at checkout

10.49
Marshall E. Campbell Co.
120VAC Dual Ionization Smoke Alarm
Delivery date & cost shown at checkout
10.72
ULE Group
120V AC/DC Smoke Alarm
Delivery date & cost shown at checkout
11.72
City Electric Supply
BRK 9120B AC/DC Smoke Alarm with 9V Backup Battery 120 VAC
Delivery date & cost shown at checkout
13.95
Beverly Hills Lighting
9120B SMOKE DETECTOR W/ BAT-B/U
Delivery date & cost shown at checkout
14.36
World Electric
BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup
Delivery date & cost shown at checkout
15.35
Codale
BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup
Delivery date & cost shown at checkout
15.89
Cooper Electric
BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup
Delivery date & cost shown at checkout
15.99
Orange County Building Materials
Smoke Alarm 9120B Wired/Batt AC/DC
Delivery date & cost shown at checkout
15.99
Frankfort Hardware
FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White
Delivery date & cost shown at checkout
16.95
Appliance Parts Company
Brk Electronics Smoke Alarm 120V Battery Back 9120B
Delivery date & cost shown at checkout
16.99
Ashby Lumber
Smoke Detector, Wired, 120V AC/DC
Delivery date & cost shown at checkout
16.99
Sunco Lighting
Sunco First Alert BRK Hardwired Ionization Smoke Alarm
Delivery date & cost shown at checkout
17.25
BuyRite Electric
First Alert 9120B Hardwired Ionization Smoke Alarm with Battery Backup BY BUYRITE ELECTRIC
Delivery date & cost shown at checkout
18.95
Smoke Alert Home Fire Safety
First Alert 9120B Hardwired Ionization Smoke Alarm Battery Backup
Delivery date & cost shown at checkout
18.95
Smoke Alert Home Fire Safety
BRK First Alert SMI100-AC (1046836) Hardwired Ionization Smoke Alarm Battery Backup (Formerly 9120B)
Delivery date & cost shown at checkout
19.79
Voomi Supply
BRK 9120B Wire-In Smoke Alarm 120V AC 60Hz with Backup 9V Battery
Delivery date & cost shown at checkout
19.87
Amazon.com
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
Delivery date & cost shown at checkout
20.25
eBay
BRK First Alert 9120B/1046836/SMI-100-AC Smoke Detector AC Powered w/battery | Features with Battery Backup | Smoke Alarm | White | 0689744101497
Delivery date & cost shown at checkout
35.00
eBay
Brk First Alert 9120b Smoke Detector, We Have 11 Available
Delivery date & cost shown at checkout
20.99
Target
First Alert 9120B-AC BRK, Hardwire Interconnect Smoke Alarm with Battery Backup
Delivery date & cost shown at checkout
21.99
Hancock Lumber
First Alert Ionization Smoke/Fire Detector Hard-Wired W/Batt Back-Up 1039808 Disco
Delivery date & cost shown at checkout
29.99
Ramsey Hardware & Paint
Ionization Smoke Alarm Hardwired with Battery Backup for Continuous Protection
Delivery date & cost shown at checkout
30.00
Radwell.com
9120B BRK ELECTRONICS - Fire Safety & Fire Alarm Supplies
Delivery date & cost shown at checkout
46.58
GoVets.com
Qty 2 | First Alert Smoke & Carbon Monoxide Alarms, Alarm Type: Smoke , Sensor Type: Ionization , Mount Type: Ceiling, Wall ,
Delivery date & cost shown at checkout
52.34
Sears
thinkstar First Alert 9120B Smoke Detector & Alarm, Ac Powered With Battery Backup
Delivery date & cost shown at checkout
53.30
Sears
thinkstar Brk 9120Lbl Hardwired Smoke Detector With Battery Backup
Delivery date & cost shown at checkout
57.34
Conservation Mart
First Alert BRK Hardwired Ion Smoke Alarm with 9V Carbon Zinc Battery Backup 9120B
Delivery date & cost shown at checkout
66.90
Westway Electric Supply
The BRK 9120B6CP is the special contractor pack offering of our best selling smoke alarm. The 9120B is a hardwired, 120V AC 60Hz single and/or
Delivery date & cost shown at checkout
101.90
Instacart
First Alert White Hard-Wired Smoke Detector Alarm With Battery Backup - 1 each
Delivery date & cost shown at checkout
109.03
Uber Eats
Brk Smoke Alarm With Battery Backup
Delivery date & cost shown at checkout
113.19
Shipt
First Alert BRK Hardwired (with Battery Back-up) Ionization Smoke Detector (6-Pack)
Delivery date & cost shown at checkout
220.30
AliExpress
9120B Smoke Detector, Hardwired Alarm with Battery Backup, 12-Pack
Delivery date & cost shown at checkout
647.04
Electric Bargain Store
BRK Electronics First Alert 9120B-48P 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm - Box 48-Pack (Upgraded to SMI100-AC)
Delivery date & cost shown at checkout

Product Details

Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure

Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm

To ensure complete protection make sure to place one on each level of your home and in each bedroom

Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected

Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy

Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage

First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

Best Review

Customers find the smoke detector easy to install with clear instructions and appreciate its functionality as a hardwired alarm with battery backup. They consider it a good value for money and a perfect replacement, taking just two minutes to install. The battery life receives mixed feedback - while it comes with a full 9-volt battery, some report dead batteries within two months. The quality and alarm performance also get mixed reviews, with some customers reporting defective units and false alarms.AI Generated from the text of customer reviews

Popular Products

2-Pack 10FT USB Power Extension Cable for Wyze Cam,WyzeCam Pan,YI Home Camera,Nest-Cam Indoor,Oculus Go,Netvue,KasaCam,Furbo Dog,Blink,Flat USB to Micro USB Charging Charger Cord for Wyze-Cam v3 v2

$8.99

Compare at 3 stores

HONGDAK Action Camera Accessories Kit for GoPro Hero 13 12 11 10 9 Black, Waterproof Housing+Silicone Case+ Adjustable Arm+Head Chest Wrist Strap+Bike Mount+Suction Cup+Floating Grip Bundle Set 63in1

$31.99

Compare at 3 stores

JJC E-Mount Body Cap & Rear Lens Cap Cover Kit for Sony A7 A7II A7III A7IV A7S II III A7R II III IV A7RV A7CR A7C II A6700 A6600 A6400 A6300 A6100 A6000 A1 II ZV-E10 II ZV-E1 & More Sony Camera & Lens

$5.99

Compare at 2 stores

Altura Photo 58MM Tulip Flower Lens Hood for Canon EOS 77D 80D 90D Rebel T8i T7 T7i T6i T6s T6 SL2 SL3 DSLR Cameras with Canon EF-S 18-55mm f/3.5-5.6 is Lens and Select Nikon Lenses

$9.99

Compare at 4 stores

Micro USB Cable,2Pack Extra Long Android Charger Cable 10Ft 6Ft, EnduringFast Phone Charger Cord Android USB Charging Cable Fit for Samsung Galaxy S7 S6 S7 Edge S5,Note 5 4,LG G4,HTC,PS4,Camera,MP3

$6.99

Compare at 9 stores

BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

Compare Buying Options

120VAC Dual Ionization Smoke Alarm

120V AC/DC Smoke Alarm

BRK 9120B AC/DC Smoke Alarm with 9V Backup Battery 120 VAC

9120B SMOKE DETECTOR W/ BAT-B/U

BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup

BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup

BRK 9120B 120V AC 60Hz Wire-In Smoke Alarm, 9V Battery Backup

Smoke Alarm 9120B Wired/Batt AC/DC

FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White

Brk Electronics Smoke Alarm 120V Battery Back 9120B

Smoke Detector, Wired, 120V AC/DC

Sunco First Alert BRK Hardwired Ionization Smoke Alarm

First Alert 9120B Hardwired Ionization Smoke Alarm with Battery Backup BY BUYRITE ELECTRIC

First Alert 9120B Hardwired Ionization Smoke Alarm Battery Backup

BRK First Alert SMI100-AC (1046836) Hardwired Ionization Smoke Alarm Battery Backup (Formerly 9120B)

BRK 9120B Wire-In Smoke Alarm 120V AC 60Hz with Backup 9V Battery