SMOKE ALARM ION 120V+BAT

Item no: 5194782 | 029054512024
$14.99
150  Estimated 
Color : WITHOUT SILENCE BUTTON
-+



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  • Power Type: Hard-Wired with Battery Back-up
  • Sensor Type: Ionization
  • Product Type: Smoke Alarm
  • Color Family: White
  • ETL Listed: Yes
  • Detects Smoke: Yes
  • CSA Listed: No
  • Indoor and Outdoor: Indoor
  • UL Listed: Yes
  • Number in Package: 1 pk
  • Volts: 120 volts
  • Detects Carbon Monoxide: No
  • Test and or Reset Button: Yes
  • 9V battery back-up
  • Tamper resistant locking pins
  • Universal mounting bracket
  • Latching alarm indication


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What people are saying

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REVIEW SNAPSHOT®

by PowerReviews
FIRST ALERTBRK� Smoke Alarm (9120B-12ST)
 
1.8

(based on 12 reviews)

Ratings Distribution

  • 5 Stars

     

    (0)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (8)

33%

of respondents would recommend this to a friend.

Pros

  • Reliable (3)

Cons

  • False alarms (4)
  • Short battery life (3)

Best Uses

  • Bedroom (4)
  • Kitchen (3)
  • Living room (3)
  • Office (3)
    • Reviewer Profile:
    • Avid do-it-yourselfer (4), Casual do-it-yourselfer (3)

Most Liked Positive Review

 

DON'T UNDERSTAND REVIEWS

THE MODEL 4120B WAS INSTALLED IN OUR NEW HOME EARLY IN 2000.
ALTHOUGH BATTERIES HAVE BEEN REPLACED IT HAS BEEN IN A TIMELY FASHION AND ONLY NOW AM I REPLACING ALL 6 OF THEM...Read complete review

THE MODEL 4120B WAS INSTALLED IN OUR NEW HOME EARLY IN 2000.
ALTHOUGH BATTERIES HAVE BEEN REPLACED IT HAS BEEN IN A TIMELY FASHION AND ONLY NOW AM I REPLACING ALL 6 OF THEM BECAUSE I AM SELLING AND DON'T WANT THE NEW OWNERS TO HAVE ANY HASSLES. CAN'T UNDERSTAND THE OTHER COMMENTS NONE OF THEM REFLECT MY EXPERIENCE.

P.S. HAD TO SCOUT AROUND TO FIND THEM

VS

Most Liked Negative Review

 

Who designed these anyway? worthless!

I don't know who I like the least, the manufacturer of this unit or our cheap builder. We replaced all the units one month after moving into our brand new home four years ago...Read complete review

I don't know who I like the least, the manufacturer of this unit or our cheap builder. We replaced all the units one month after moving into our brand new home four years ago because of constant false alarms.
removing batteries and eventually ripping down all the units at 2am and throwing in trunk of car had not deterred the posessed equipment. Battery life seems short and when I do have excess smoke in kithen from pizza etc they never go off. now four months of unexplained intermittent false alarms no pattern. can't see the flashing and solid lights very well. Where they are located according to instructions ,they are impossible to reach and I think somebody must be playing a joke and really having a good laugh Don't even consider purchasing these and tell your builder you'll pay to upgrade.

Reviewed by 12 customers

Displaying reviews 1-12

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(1 of 6 customers found this review helpful)

 
4.0

It's really not that hard...

By Jim the homeowner

from Chicago, IL

About Me Casual Do-It-Yourselfer

Verified Reviewer

Pros

  • Reliable

Cons

    Best Uses

    • Bedrooms
    • Kitchen
    • Living Room
    • Office

    Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

    You've read the other reviews and now you're here, let me tell you, it's not that hard.

    False alarms? Chirping? Change the batteries, in all of the detectors you have. Yes, all of them. What does the fire department say? Change your batteries every year! When I set my clocks back in the Fall, all my batteries get changed.

    Is the battery door finicky? Well, yes. The battery will go in either way, but only one way will make proper contact and stop the chirping. TIP: If the battery door won't close, take the battery out, flip it over and put it back in (you had it upside down) Still won't go in? Give the alarm a 1/4 turn to detach it from the base, pull the connector out and, voila!, you can see what you're doing. Put the battery in (the right way) close the door, reattach the connector and replace the alarm in the base.

    Are there other, more expensive, alarms out there? Sure! You can spend a ton of money on alarms, but before you do, you should know this: those 'awesome' First Alert alarms? They're made by BRK Electronics and use the same battery doors.

     
    1.0

    Terrible design

    By Bignose

    from Europe

    About Me Avid Do-It-Yourselfer

    Verified Reviewer

    Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

    How hard can it be to design a fire detector with a battery it doesn't take a major in engineering to change? I DO have a major in engineering, and I was about to give up on this one. Seriously, 50% of their sales must be to people breaking their old one while trying to change battery.

    (1 of 1 customers found this review helpful)

     
    3.0

    Replacement Smoke Detector

    By Sterling

    from Glendale AZ

    About Me Casual Do-It-Yourselfer

    Verified Buyer

    Pros

    • Batteries included
    • Easy to Install

    Cons

    • Poor indicator light

    Best Uses

    • Bedrooms

    Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

    I replaced the 15 yr old smoke alarms in my bedrooms with this smoke detector. The included wiring adapters did not fit my existing kiddie connectors, but the included wired connector and a few wire nuts did the job. The battery door on this model is different than others: they designed for it to be accesible with out removing the detector from the wall or ceiling. However, you have to put the battery in at weird angle and it just doesn't quite work unless you take it down. My only complaint is that when wall mounted, there is no way you can see the indicator light.

    (1 of 2 customers found this review helpful)

     
    4.0

    DON'T UNDERSTAND REVIEWS

    By WIBBI

    from PRESCOTT, AZ

    About Me Beginner

    Pros

    • Early Warning
    • Inconspicuous
    • Reliable
    • Sensitive

    Cons

      Best Uses

      • Bedrooms
      • Garage
      • Kitchen
      • Living Room
      • Office

      Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

      THE MODEL 4120B WAS INSTALLED IN OUR NEW HOME EARLY IN 2000.
      ALTHOUGH BATTERIES HAVE BEEN REPLACED IT HAS BEEN IN A TIMELY FASHION AND ONLY NOW AM I REPLACING ALL 6 OF THEM BECAUSE I AM SELLING AND DON'T WANT THE NEW OWNERS TO HAVE ANY HASSLES. CAN'T UNDERSTAND THE OTHER COMMENTS NONE OF THEM REFLECT MY EXPERIENCE.

      P.S. HAD TO SCOUT AROUND TO FIND THEM

      (4 of 5 customers found this review helpful)

       
      1.0

      dumpster fill

      By me

      from CO

      About Me Avid Do-It-Yourselfer

      Pros

        Cons

        • False Alarms
        • Short Battery Life

        Best Uses

          Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

          Simply put DO NOT BUY THEM.
          Random alarms
          Poor construction
          Short battery life
          did I say RANDOM alarms?

          (10 of 11 customers found this review helpful)

           
          1.0

          Who designed these anyway? worthless!

          By Roxythelab

          from Bozeman, mt

          About Me Novice

          Pros

            Cons

            • False Alarms
            • Short Battery Life

            Best Uses

              Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

              I don't know who I like the least, the manufacturer of this unit or our cheap builder. We replaced all the units one month after moving into our brand new home four years ago because of constant false alarms.
              removing batteries and eventually ripping down all the units at 2am and throwing in trunk of car had not deterred the posessed equipment. Battery life seems short and when I do have excess smoke in kithen from pizza etc they never go off. now four months of unexplained intermittent false alarms no pattern. can't see the flashing and solid lights very well. Where they are located according to instructions ,they are impossible to reach and I think somebody must be playing a joke and really having a good laugh Don't even consider purchasing these and tell your builder you'll pay to upgrade.

              (4 of 4 customers found this review helpful)

               
              1.0

              Smoke Alarm with problems

              By dotherightthing

              from CA

              About Me Avid Do-It-Yourselfer

              Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

              Electrician installed these units during a remodel (10 units)and now we need to remove them or we will loose serious sleep. They beep randomly when batteries are good and the sensor is free from dust and not blocked. Very hard to tell which one is bad because they are all interconnected and beeping at all times of the morning which never fails. I suspect that contractors must get kickbacks or get these things for very cheap and that is why there are so many very poor reviews of this BRK smoke alarm.

              (8 of 9 customers found this review helpful)

               
              1.0

              Badly designed battery copartment

              By Mike the electrician

              from NYC

              About Me Professional

              Pros

              • Good price

              Cons

              • Battery door and LED

              Best Uses

              • Not reccommeded

              Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

              I am a professional fire alarm installer and have used BRK commercial products for years, they are excellent products. This consumer detector is poorly designed, which I can't understand from a company like BRK. The battery door is a joke, you install the battery and to work the door must push the battery onto the contact points inside, only problem is the door latch is a defective and doesn't latch properly. You even wonder if it is making contact because their is not positive feedback of any type to indicate it's latched. Then the LED or light is another problem. if you mount this on a wall, of course leaving the 6 inch dead zone gap from the ceiling, you can't see the LED unless your on a ladder. Bad, bad design.

              (3 of 4 customers found this review helpful)

               
              1.0

              False Alarms

              By Brittany

              from Windsor, CO

              About Me Casual Do-It-Yourselfer

              Pros

                Cons

                • False Alarms
                • Malfunction
                • Short Battery Life

                Best Uses

                  Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

                  The alarms go off randomly with no cause all the time. I have changed the batteries in all of them but they keep going off. I finally pulled them off one at a time until the others stopped going off. That has stopped the problem so far. In order to replace all of them I am going to have to replace the electrical connector as well as the ceiling base. I just wish the contractors would use a decent product instead of going cheap. We would have paid for the upgrade!

                  (2 of 4 customers found this review helpful)

                   
                  1.0

                  Don't buy this product

                  By Steve the Homeowner

                  from Houston, TX

                  About Me Do-It-Yourself

                  Pros

                    Cons

                    • False Alarms

                    Best Uses

                      Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

                      My home builder installed this product and now I'm stuck with it. We are gettinhg false alarms in the middle of the night and don't know which unit is malfunctioning since we're told that any one of the ten can malfunction and set off any other one. In addition the battery is extremely difficult to replace.

                      (2 of 2 customers found this review helpful)

                       
                      3.0

                      This product worked fine for me

                      By harveywqa

                      from Waianae, HI

                      About Me Professional

                      Pros

                      • Inconspicuous
                      • Reliable

                      Cons

                        Best Uses

                        • Bedrooms
                        • Kitchen
                        • Living Room
                        • Office

                        Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

                        As a developer, my electrical contractor used these alarms in four houses I built. They are wired alarms with battery back-up. The battery insertion is a little tricky, but nothing that difficult--you just have to insert it correctly, and when it is latched up, the contacts are made automatically. I thought the sound level was quite adequate--on a par with any others I have used. I will continue to use it.

                        (2 of 3 customers found this review helpful)

                         
                        1.0

                        Awful

                        By Bobby

                        from NYC

                        About Me Handyman

                        Pros

                        • Nothing

                        Cons

                        • Difficult to Install
                        • Too Quiet

                        Best Uses

                        • No where

                        Comments about FIRST ALERT BRK� Smoke Alarm (9120B-12ST):

                        The battry is practically impossible to install and then, when it is installed, the locking pin does NOT lock the battery door.
                        I tested it will smoke and it really takes A LOT of smoke to cause the quite LOW alarm. The alarm just beeps three times and then stops and then beeps three times again, and so on. Not powerful enough to warm of danger.

                        Displaying reviews 1-12

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