First Alert 9120LBL Hardwired Ionization Smoke Alarm 10 year Lithium Battery Backup with Locked Battery Drawer

$19.95

The First Alert 9120LBL is an affordable hardwired 10 Year Smoke Alarm alarm providing accurate sensing technology, easy installation, and connectivity.

Bulk Quantity discounts are available – send us a message to receive a quote!

Only 118 left in stock

SKU: 9120LBL Categories: , Tag:

The BRK Brands, Inc. (First Alert) 9120LBL (base model 9120B) is a wire-in, 120V AC 60Hz single and/or multiple station smoke alarms specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 101.

The 9120LBL complies with UL217, CSFM, NFPA 72, HUD, FHA and other agencies that model their codes after the above agencies. They meet building codes where AC/DC with Silence smoke alarms are required. The alarms are interconnectable with up to 18 devices, of which 12 can be smoke alarms.

The BRK First Alert 9120LBL alarm features a dual ionization smoke sensing chamber, an 85dB horn and a “silence” feature. This alarm features a 10 year battery backup. The battery drawer is shipped pre-locked so battery will not be discarded prematurely. Under normal conditions you should not have to replace the battery for the life of the alarm. The “Smart Technology” system is designed to reduce nuisance alarms. “Latching Alarm Indication” remembers which unit initiated an alarm. When interconnected in a series, the unit that triggered the alarm rapidly flashes its red LED indicator. After the alarm condition subsides, the initiating unit will store in memory or “latch” the information and begin to flash the LED indicator 2 seconds on, 2 seconds off. The “Perfect Mount” system features a gasketless base and a mounting bracket that keeps the alarm secure over a wide rotation range to allow for true alignment. Other Contractor Preferred features include a dust cover to keep alarm clean during construction, keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. Two locking features are provided to prevent battery theft and/or theft of the unit. Connection to AC power is made with a “Quick-Connect” wiring harness. Installation is quick, easy and cost effective.

» 10YR Lithium Battery Backup

» Locked Battery Drawer

» Latching alarm indicator – remembers which unit initiated an alarm

» Smart Technology – helps reduce the number of nuisance alarms

» Perfect Mount – allows for easy alignment of alarm

» Single button test/silence

» Dust Cover

» 10-Year Limited Warranty

Weight .75 oz

92 reviews for First Alert 9120LBL Hardwired Ionization Smoke Alarm 10 year Lithium Battery Backup with Locked Battery Drawer

  1. Martin –

    What else to add;)?

  2. John Mattaliano –

    Great price, fast shipping. I replaced my 8 yr old BRK’s. Interchangable with the existing instal ring. Install took less than 1 minute each.

  3. Kevin Stodolski –

    I needed new smoke alarms for my house and the ones i had were old and needed specific comoatability for the new ones.
    These matched perfect,were easy to install. the they are working thus far and the delivery was prompt.

  4. Betty L Hetherington –

    My initial Alerts were installed in 1994 by the Builder at a height of 12 ft due to cathedral ceilings here in the Phoenix area. I received the 2 replacements the day before I left on a trip. I am back but I must wait for my son to climb up the ladder to install them. I am elderly and a widow. I don’t climb up on ladders! Also, at that height we were not aware the alarm should be replaced in 10 years (2004). It actually was embossed on the Alert to be replaced in 2004.

  5. Bob –

    A pleasure to do business with smokealert.net

  6. GD –

    Fast, accurate service! Alarm received soon and worked as expected. Will buy more for sure.

  7. Joe Schmuckatelli –

    Bought to replace 10 year old detectors. Direct replacement. Ten years without annual battery replacement is a great improvement. Easy peasy.

  8. Sherrie/Doug Matthews –

    Very helpful in helping us determine what to get to replace our current smoke detectors that were old and not working. thank you!

  9. Marty L –

    Thanks for your prompt shipping and accuracy in my order. Gladly recommend to others.

  10. Kelly –

    So far so good! We have vaulted ceilings and were tired of every year changing out batteries! These were easy to install and we received them very quickly!

  11. Kurt –

    I ordered – shipped withing hours – arrived within days – all items new and worked well.

  12. Jim Vanderborg –

    Very, very pleased with this transaction. Good product at a very fair price.
    Fast shipping, excellent experience overall.
    Merry Christmas everyone.

  13. Sean D –

    Great product and customer service.

  14. Alfredo Esguerra –

    Product was as described and installation was compatible with the existing system in the house.

  15. Anonymous –

    Excellent replacement for older model. Fast delivery as expected. And they were easy to mount.

  16. Lee Miller –

    It was an easy install. I did have to change the mounting bracket which was easy. Will pass your company on to all my friends.

  17. Gary S –

    Quick response by email and they shipped out the product very fast. I bought the 10 year First Alert that automatically start beeping when the 10 years expire so you need to make sure the company that you buy from has current inventory. Smoke Alert has current products and the code date was like 45 days from when they were manufactured. I would give them a A ++ for service, price and freshness of products!

  18. John –

    Really good smoke detector east to wire in and not having to replace the battery for 10 years is a great bonus

  19. MC –

    The website was clear and easy to navigate. Our order was received very quickly. I would highly recommend smokealert.net and will be using them in the future as needed.

  20. Kenneth –

    Smoke Alert delivered their product in a timely manner. After installing the first replacement one, the rest only took about 10 minutes each to install. My ceilings were 9’4″ and 13′ high.

  21. Michael Maracz –

    I am returning 6 Smoke Alarm with separate invoices for credit of 3 each to save on return shipping charges. Myself at 4330 and Linda 4193.

    I am uncertain at this time what Carolyn Basa at 4188 and Lorraine Russell 4240 Lanier Ridge Walk are going to need because their Condo’s are different than ours.
    Waiting on Forsyth County Fire Prevention to determine what their needs are. Carolyn does not even have an upstairs.

  22. jose salazar –

    This is the 4th time I purchase from this site and they are the best priced and quick shipping. Thanks

  23. Shafs –

    I love the product. Fast shipping and we couldn’t find the same quality product for a lesser price. If there is an issue in the basement they all will beep to let us know. I love that feature!

  24. Anonymous –

    Replaced old BRK smoke detectors with new 10 year sealed battery units. Easy replacement; just loosened 2 screws on old mounting ring and replaced with new ring. New detectors plugged into existing connection.

  25. stephen shahan –

    I purchased 7 detectors for replacement at my home. they were very easy to install and even had the same power plug as the existing units. I’m a little skeptical on a “ten year” battery, but time will tell.

  26. Dennis Stephens –

    Purchased 10 of these detectors to replace 10 year old units. Easy 5 minute start to finish install with wiring each unit. All worked perfectly, and with 10 year battery, not needing to climb those ladders for stupid battery beeps!

  27. Gary Lantz –

    Detector works great and shipping was fast. Best price on the web that I could find for this detector.

  28. James Stephens –

    Products werer delivered on time. Replaced old detectors from same company. Installed with ease.

  29. Anonymous –

    I bought these to replace the original BRK detectors in my house (~15 years old), which were starting to give false alarms. SmokeAlert had unbeatable pricing, shipped within a few hours of order, and the manufacturing dates were all within 2 months of purchase…I couldn’t be more pleased.

  30. Elizabeth McHenry –

    We had a similar battery model that was 17 years old, totally unaware that they need replacing after 10yrs. These connected perfectly to the home wiring!

  31. bryan furlong –

    Ordered two of these. Got exactly what I ordered and at a fair price.

  32. Dennis Gilman –

    I have ordered four or five times and always had prompt accurate service. Called with a question and very satisfied with response.

  33. Arnold Bauer –

    Very pleased with the speed of delivery and the price. I will buy a half dozen more in the next year. LUV lithium

  34. Anonymous –

    Excellent service, products shipped immediatley
    very well packaged

  35. Mike –

    I installed these new smoke alarms with no issues. I like the fact that I should not have to swap batteries for the next 10 years.

  36. nancy –

    4 stars because the shipping took the longer time than I expected.

  37. Clifton Hymes –

    Very,very pleased with the replacement alarms. Mines bwing og thw hardwired/backup battery type. WITH the new MD laws for the 10 yr. Battery was very easy with the plug n play attchments to complete process & the price was very reasonable. I did purchase 1 too many though. Thought i needed 9 , only 8 was needed.

  38. steve weiss –

    Units were easy to install, instructions were clear, and delivery was prompt

  39. Paul Segal –

    very good smoke detector great pricing

  40. Nicholas Coleman –

    Had no problem at all

  41. John –

    The purchase experience for our smoke detectors couldn’t have been easier . SmokeAlert was great to work with and offered an important, quality product at a very fair price. The detectors installed easily into my previous smoke detector mounting bases. The install was pretty much “plug and play”.

  42. EJ from MD –

    I was very pleased to find the vast array of options, and all at very competitive prices. I found, I ordered, and I received my order – quickly and accurately. Then, when I realized that I had ordered the wrong items – totally my fault – they quickly and professionally arranged to take back my mistake and got me the correct units. They went above and beyond – turning what could have been a less than pleasant experience into a total success. I highly recommend them!

  43. Mark Hare –

    Fast shipping, great products and also the best pricing around. Reliable and honest companuy.

  44. Timothy Collins –

    I highly recommend this company for anyone needing a smoke detector. Great customer service with helpful information that is simple to understand. On any item I have bought from them, they have beat every other on-line price I could find.

  45. Anonymous –

    Received the Smoke Alarms and installed. Order and delivery process were perfect. Will use SmokeAlert for my next purchase and recommend to friends and family for theirs.

  46. larry c –

    The product is good and is easy to install. Even more impressive was the prompt processing and shipping of this order.

  47. CP –

    Easy to install and they just simply worked perfectly. No issues at all. I swapped my old expired units out with these. Took less than 5 mins each.

  48. Robert Rypka –

    I replaced all 7 of my 17 year old smoke alarms with this. It was easy to install with good instructions and all tested out well.

  49. Barbara –

    I bought 3 of these units to replace similar BRK alarms that had reached the end of their lives.

    SmokeAlert prices compare favorably to other online vendors. More importantly, the salespeople are able to knowledgeably answer questions, assist in selection, and provide advice. For me, that makes all the difference.

  50. George Danziger –

    The selection of smoke alarms on this vendor’s website was huge, well organized and had easy clear and current information on backordered stock and projected delivery dates. Information on discontinued products and internal links to new versions of the items were also provided. That’s a very unusual and very welcome feature. The search functions were easy to use and everything on the website seemed to work correctly.

    The pricing was very competitive and prompt shipping was free. The products ordered arrived promptly and were in perfect condition.

    Overall, this was an excellent buying experience and I plan to buy all the devices of this type from SmokeAlert that I may need in the future for the properties I own and manage. I consider this vendor to be a real find.

  51. Ursula Mesa –

    Great product!!

  52. Michael –

    Ordered 5 to replace existing 10 year old detectors. These showed up before an Amazon order I placed at the same time. Installation was a cake walk. Very pleased with my experience.

  53. Anonymous –

    Easy install and operation.

  54. Michael Sweeney –

    WONDERFUL, easy picks, fast shipping, good prices

  55. Patrick Beatty –

    Everything nicely done for my order. One question: If I need warranty help before the 10 year period, do I contact First Alert or you guys? Thank you.

  56. Kenneth Senderak –

    Thank you for the quick ship of a very good product.

  57. Greg Davis –

    I bought 6 replacement smoke detectors akd saved $10 per vs. Lowe’s. The transaction was perfect and shipment was fast. Overall, a very good buying experience.

  58. John Diak –

    Smoke detectors came on time and are working great – no more early morning chirping for 10 years!

  59. Jeanne S –

    I had been searching for a replacement smoke detector for my Kidde hard wired smoke detectors from 14 years ago. You guys had them and were the most reasonably priced. Thanks so much, I can now get my Fire CO.

  60. Anonymous –

    Great price and the company shipped very quick

  61. greg grajek –

    great service at the best price

  62. Anonymous –

    Shipping was quick, price was best I could find. Replaced five “chirpers” with 10 year and did it myself!!!

  63. Anonymous –

    Compared the same product from multiple sites (Home Depot, Lowes and Amazon) and Smokealert.net was the least expensive option. I received the smoke detectors within 2 days and have not had any issues. I would highly recommend using Smokealert.net for purchasing smoke/carbon monoxide detectors.

  64. A M P –

    Changed out 2006 9120 units reusing existing plugs and mount bracket. Perfect.

  65. Dene Sturm –

    I am very impressed with this company. My order was sent on time, and no shipping charge even to Hawaii.

  66. Donna Smith –

    Provided excellent delivery and product was what I expected.

  67. D. Miller –

    Good product, easy to install. Good price, with fast and free shipping. So far, none of the dectectors I have bought from Smokealert.net have failed.

  68. Barbara Bentley –

    same as above

  69. Jim –

    Very good price and easy install as a replacement for 4 older First Alert Alarms.

  70. Greg –

    SmokeAlert is a great source for smoke alarm products. They are the real deal with quick service, great pricing, and inventory to back it up.

  71. carolyn lamma –

    Good deal

  72. KENNETH RYAN –

    Well, I did not get what I thought, but I’m sure it was my fault, not yours. I thought I was getting combined smoke/CO at a really great price, but what I got was just smoke at a good price. Like I said, I’m sure it was my fault, not yours.

  73. bernhard burg –

    Very well done, thank you. B.Burg

  74. Roy Stevens –

    Bought four hardwired replacement smoke detectors. Order was shipped and received quickly. Installation took less than an hour and all four tested correctly. Excellent replacement option.

  75. Virginia Briggs –

    smoke/carbon monoxide/hard wire/10 year battery all in one

  76. Harv –

    Very good value for a name brand product. Less cost than the big-box stores.

  77. Zman –

    I am so happy with my purchase. My detectors arrived quickly and they had very recent manufacturing dates. Fast and simple, could bot ask for anything else.

  78. Roger Wallen –

    good product, good price

  79. Chris –

    Purchased to replace two old 9120B units, was somewhat difficult to find this lifetime battery version, looking forward to no battery change outs

  80. Donald Hobson –

    Had been looking for the Smoke Alarm with 10 year battery backup for awhile. I came across smoke alert and found the best deal online. The install was easy and quick. (Repacement). The shipping was fast and packaging great. Will use again

  81. T Hoye –

    I chose these to replace my 9120B interconnected set. It is a relief to know I will not have to change batteries from alarms on my high ceilings for 19 more years. Very easy to switch out.

  82. Roger Buckley –

    Price was right. It was easy enough to install, but I cant’ in good conscience give you a five till I see how well they perform.

  83. David M. –

    I had no problems replacing my 8!!!! smoke detectors from 2005. I got tired of the every 18 month chirping of dead 9V batteries. I am hoping that these long life lithium batteries will last the projected 10 years. The do not include screws to mount but since this was a replacement for me it did not matter.

  84. Martin Stone –

    Git everything I was expecting and in just a few days. All the smoke detectors had manufacture dates just a few months earlier, no old-stock items.
    Would highly recommend SmokeAlert and will do business with them again.

  85. Chris Hoffman –

    No complaints. Nobody cna touch the prices and the shipping was fast.

  86. Frank Smrdel –

    I ordered these smoke alarms and you shipped them out the same day, priority mail as advertised…awesome! They are what I expected.
    However, the post office took 9 days to get these to me because they arrived in town in 2 days, but ended up going to Pittsburgh then back before getting to me. Good thing I didn’t need these in a hurry. Post Office is very inept.

  87. Kenneth Igel –

    Best price. Fast shipping

  88. Anonymous –

    Had 4 outdated smoke detectors go off at 11:00 PM. Ordered 4 from Smoke Alert and received them in a few days. Since ceilings are quite high I had them installed by an electrician. They look fine. Hope they are never needed!

  89. Michael Tiscornia –

    Ordered one to replace a 17 year old First Alert alarm. Wire connections from the old unit were compatible with the new uint. Changed the base, plugged in and all was well. Ordered additional eight units to change all old detectors. Change out went smoothly. Like the idea of a 10 year battery.

  90. richard Scibetta –

    These look good and easy to install. Best part no more changing batteries for 10 years!!! They communicate with all alarms if tripped (because house is wired that way)!

  91. James Hunter –

    Products were delivered on time, pricing was excellent and the products were exactly what we had ordered

  92. richard scibetta –

    great service everytime. My only place to buy!!!

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