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First Alert 3120B Hardwired Photoelectric and Ionization Combo Smoke Alarm with battery Backup
First Alert 3120B Hardwired Photoelectric and Ionization Combo Smoke Alarm with battery Backup


 


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Description
 
The BRK First Alert 3120B is a dual sensing detection unit that utilizes both photoelectric and ionization sensors to detect a multitude of smoke types. The BRK First Alert 3120B photoelectric sensor is designed to identify larger smoke particles usually associated with smoldering flames, while the ionization sensor will detect fast flaming fires. The BRK First Alert 3120B will provide detection quickly and will serve as you first line of defense.  This state-of-the-art device has several indicators based on its recent activity; a alarm latch which exposes to identify that it is the imitating alarm (if interconnected to other devices), as well as a battery latch which will be exposed when a new battery is needed. The backup batteries (2 x AA) inside the BRK 3120B will provide additional power if needed during power loss.
The First Alert BRK 3120B meets all requires of UL217, CSFM, NFPA 72, HUD, FHA and other agencies requiring an AC/DC Hardwired photoelectric and ionization combination smoke alarm. In addition, the First Alert BRK 3120B incorporates BRK’s patented OptiPath technology designed to maximize effectiveness when mounted against a wall, or on a ceiling. The OptiPath technology allows for 360 degrees of detection.

SPECS:
Utilizes both ionization and photoelectric smoke sensors for maximum protection
Two Latching Features - Alarm Latch and Low Battery Latch
Two Silence Features - Alarm Silence and Low Battery Silence
Two AA Battery Backup
Optipath 360 Technology
10-Years Limited Warranty
Model # 3120B
Weight 9.5 oz
Dimension 5.0" dia x 2.0"H
Operating Voltage 120V AC 60Hz w/ two 1.5V AA battery backup
Operating Current 0.07 amps (standby/alarm)
Temperature Range 40°F (4°C) to 100°F (38°C)
Humidity Range 10% to 90% relative humidity (RH)
Audio Alarm 85dB at 10 feet
Test/Silence Electronically simulates smoke condition, causing the unit to alarm Press and hold test/silence button
Alarm Reset Automatic when smoke clears
Interconnections Up to 18 units of First Alert or BRK Smoke, CO and Heat Alarms. Maximum of 12 smoke alarms. See user's manual for details.
Smoke Sensor Photoelectric and Ionization
Indicator Lights/Sounds
AC Power: Constant Green LED
DC Power: Intermittent Green LED
Local Alarm: Red LED flashes rapidly
Remote Alarm: Red LED out.
Alarm Latch: LED flashes red 2 sec on, 2 sec off after local alarm stops
Low Battery Latch: LED flashes green 2 sec on, 2 sec off

Average Rating: 5 of 5 Total Reviews: 119 Write a review »

  0 of 0 people found the following review helpful:
 
First Alert 3120B Hardwired Photoelectric and Ioni November 30, 2016
Reviewer: Stephen Weddel from Longmont, CO United States  
delivered on time.  All working well.  Easy to replace old alarms with these.

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  0 of 0 people found the following review helpful:
 
Easy to replace existing detectors November 11, 2016
Reviewer: PugetSound from Washington state  
Got the new detectors in a few days. Great job Smoke Alert.

Relatively easy to replace the old hard-wired detectors.

Don't know how well the detectors will work in a smoke/fire situation - hope I never need to find out. The only negative I can comment on is the green/red LED alert lights. Not as easy to see as some other models. Have to move and strain your neck to see. Think it is because the LED light opening on the case is small and the LED element is located on the motherboard. The space between the case opening and the motherboard is a factor. Like the fact this models has dual sensors.

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  0 of 0 people found the following review helpful:
 
Smoke Alarm November 11, 2016
Reviewer: Charles Manchester from Crestview, FL United States  
I am a repeat customer, purchased this alarm to replace a failed alarm.  Received new alarm within a few days, no issues.  I contacted BRK directly and they sent a replacement without question, now I have a spare...just in case.

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  0 of 0 people found the following review helpful:
 
First Alert 3120B Hardwired Combo Smoke Alarm November 10, 2016
Reviewer: R J Tuttle from Katy, TX United States  
The First Alert 3120B Hardwired Combo Smoke Alarm was the perfect replacement for my expired alarms.  These were an upgrade as they had battery back-up and both detection types.  Installation was straight forward.

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  0 of 0 people found the following review helpful:
 
Smoke & Fire Alarm September 21, 2016
Reviewer: Anonymous Person from Chesterfield, VA United States  
We hired an electrical contractor to install the new ceiling-mounted smoke & fire (photoelectric & ionization) alarm.  It complements a new wall-mounted carbon monoxide alarm.  Both alarms are top-of-the-line models highly recommended in Internet reviews.

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