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BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack | 
| Brand: BRK
Category: Home Improvement
List Price: $23.99
Buy New: $8.95
as of 3/11/2010 08:07 CST details
You Save: $15.04 (63%)
New (18) Used (2) from $7.49
Seller: ebreezeboutique
Rating:  71 reviews
Sales Rank: 407
Media: Tools & Hardware
Number Of Items: 1
Batteries Included: Yes
Shipping Weight (lbs): 0.7
Dimensions (in): 5.8 x 5.7 x 2.4
MPN: 9120B
Model: 9120B
UPC: 029054513014
EAN: 0029054513014
ASIN: B000BD8NTQ
Release Date: May 2, 2007
Shipping: Eligible for FREE Super Saver Shipping
Availability: Usually ships in 1-2 business days
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| Features:
| » | Tamper resistant locking pins, single button silence/test and loud 85dB alarm | | » | 120-Volt AC power with 9-Volt battery backup (included) to keep alarm functioning during power outage | | » | Open mounting design for easy installation with side load battery compartment for quick replacement and interconnectable up to 18 units (12 smoke, 6 CO/heat/relay) | | » | 10-Year limited warranty |
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| Editorial Reviews:
Amazon.com Product Description
Introducing the revolutionary BRK 9120 series smoke alarms which have been redesigned from the ground up. They install faster, perform better, and are even smarter than before. All of these improvements help reduce nuisance alarms and save you time and money. BRK Electronics smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service. The 9120B AC-powered smoke alarm with battery backup includes these features: - Ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly.
- 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm.
- Latching alarm indicator which automatically identifies which unit initiated the alarm.
- Smart technology to reduce nuisance alarms.
- 9-volt battery backup for peace of mind during power malfunction.
- Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality.
- Perfect mount system including a gasketless base for easy installation and new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment.
- Mounting bracket lock for tamper resistance.
- Dust cover to keep unit clean during construction.
- 10-year limited warranty.
All BRK Electronics smoke alarms meet UL 217 standard and are listed with the California State Fire Marshal. They use the new UL mandated repeating 85-decibel alarm horn pattern. 10-year limited warranty. This unit is approved for sale in Oregon after new revisions on law HB2586.--Bree NorlanderWhat's in the Box
One smoke alarm, one 9-volt battery, and user's manual
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| Customer Reviews:
Showing reviews 1-5 of 71
 Frustrated February 9, 2010
Amelia (Florida)
We had 3 9120B smoke alarms installed when we built -- moved in last fall. We have had consistent problems and had all three replaced twice. They will randomly go off -- not a chirp, just a short blast. You can identify the culprit because the green light blinks from the initiating alarm. We reset it and it happens again. I am going to ask my builder to have all 3 replaced with another brand! Do not buy this alarm.
Wish I'd read the reviews first! January 29, 2010
David L. Symonds (Denver, CO USA)
I bought these as a replacement for BRK 4120 detectors that were more than 10 years old. They (9120B)were easy enough to install and worked fine on battery power, but when connected to the system (12 detectors in our house), they chirped constantly. I returned them and got BRK/First Alert SC9120B combination smoke and carbon monoxide detectors and they work fine, but they cost about 3 times as much ($35 each). But my wife is no longer irritated and I no longer feel like pulling my hair out. And Amazon returns are awesome!
 So far it works for me and they are cheap (30% less than) on Amazon.com January 20, 2010
Chinna R. Nemelidinne (USA)
I ordered 6 of them and it took 5 min to install all 6. My old Smoke alarms activated all (6) at once one night and I called local Fire department. They checked the alarms and told me to replace all. I think we have to replace these after every 10 years. So, I was looking for them and found on Amazon.com for $9.50 (in store it is $15 each). Not seen the issues that others reported so far. Also, you can not just buy some other model and install because the wiring is different and you have to re-wire them again if you do not buy other models that do not have similar pins. I hope this helps.
Awful, just awful. January 19, 2010
mathew (Austin, TX USA)
1 out of 1 found this review helpful
I have four BRK9120 units in my house, fitted by the builder and wired together.
As others have mentioned, these units will randomly wake you up with low battery alarm sounds, which almost always seem to occur during the middle of the night. Often when you get up to investigate, the alarm stops.
If it doesn't, you have the problem of tracking down which alarm has the low battery, as on an interconnected system they all seem to beep when any of them has a low battery. There's no apparent visual indication of which one has the low battery. The usual process is to replace a battery, wait a couple of minutes to see if the beeping has stopped, go back to bed, get woken up again ten minutes later, replace a different battery, repeat until infuriated.
When you do replace the battery, if you check the one you took out you'll probably find that a battery tester rates it as fine. I've ended up with quite a selection of apparently good 9V batteries that the BRK alarms refuse to use. I've used some of the "bad" 9V batteries in other products, and they still have significant charge.
A bonus feature is that the batteries are fiddly to change during the day; the horizontal pivoting battery holder means that it can take several minutes of pushing and twisting and messing around to get them to go in. Imagine the joy at 3 in the morning while standing on a step ladder.
When the smoke alarm goes off--which it will, because invisible "smoke" from the kitchen at the other end of the house will set it off--there's no off switch. Pulling the battery won't help, because of the AC power. So you have to put up with the ear-piercing shrieking until all the connected alarms decide that the fire has gone. Since you can't see the alleged smoke they're detecting, there's no way to tell which alarm you should be fanning to make them all shut up.
In short, a badly designed product, so infuriating that I'd almost rather risk being burned alive. If I expressed how I truly feel, Amazon would censor my review for swearing. Instead I will simply note that I honestly would not fit a BRK alarm in my house if they gave them away for free. The product is so annoying it has negative value. If you have a relative you hate, fit these smoke alarms in their house.
Scares the Children January 12, 2010
Greg Stuart (Bridgehampton, NY United States)
What a disaster. These alarms now go off nearly every night. Really scares my children. I am going to remove all 10 in my house and buy another brand. They've been awful to deal with for the years we've had them. Can't tell if the old model 4120 or this is the real problem. Just called Customer Service and they basically wanted me to remove the hardwiring from each of the 10 and then rewire each one and then listen each night to figure out which one is bad and then they will replace that one. And this is for a interminant problem of a $12 dollar item. Given all the other reivews here, seems there's a problem that the company doesn't want to resolve.
Just time to move on
Showing reviews 1-5 of 71
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