Are you looking for cheap BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack on sale,
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Customer Review Rank : 
List Price : $23.99
Price : $4.99 on October 11, 2012 In stock.
Eligible for FREE Super Saver Shipping if ordered more than 6
List Price : $23.99
Price : $4.99 on October 11, 2012 In stock.
Eligible for FREE Super Saver Shipping if ordered more than 6
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.
What's in the Box
One smoke alarm, one 9-volt battery, and user's manual
- 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 replacementv and interconnectable up to 18 units (12 smoke, 6 CO/heat/relay)
- 10-year limited warranty
| 140 of 143 people found the following review helpful  a superb random alarm clock, This review is from: BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack (Tools & Home Improvement) I bought this unit to replace a prior model that was no longer available. It's installed in tandem with other smoke alarms as was its predecessor. It's less than a year old.Since new, every few random months the unit chirps a random number of times at a random hour of the day - sadly, all but once at dark o'clock, waking up our little tykes. I've replaced backup batteries that test like new on my voltmeter, with new ones that also test positive, to no avail. None of the other units in tandem exhibit a problem. All units, including this one, work as designed when running periodic tests. The unit is neither dirty nor dusty. And I know it works in smokey conditions as my wife occasionally proves by talking on the phone and cooking at the same time. It's just the kind of thing that makes you want to do something dumb like disable it. 146 of 152 people found the following review helpful Found a fix for chirping problems,  This review is from: BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack (Tools & Home Improvement) Most reviewers report random chirping. In my case, I replaced the battery and couldn't get it to stop chirping every minute, until I found this advice elsewhere on the web:1. Unplug detector from power (or flip circuit breaker) 2. Remove battery 3. Hold down Test button for 20 seconds 4. Replace battery 5. Turn power/breaker back on This stopped mine from chirping every minute. Give it a try on yours. 48 of 49 people found the following review helpful  Easy installation, This review is from: BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack (Tools & Home Improvement) I replaced all 9 smoke alarms in my house with the BRK2190B in about 20 minutes. The only reason I did not give it 5 stars is that the old ones were BRK (about 8 years old) that were starting to give false alarms (naturally at 2 or 3 in the morning). I have had them for a couple of weeks with no issues. The old ones did not indicate which unit had failed and was hard to trouble shoot). I had removed four of the 9 in the last year. All 9 of the new ones worked, and I had no issues. Only time will tell if I made the correct choice, but at least the BRK2190B will show me which unit caused the alarm. I have talked with other people with other alarms, and they all seem to have false alarms, so I am hoping the new ones work better. I admit I have not maintained them according to the manufacturer instructions, but who cleans them every month and test them every week. |
› See all 182 customer reviews...
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