BRK First Alert SC9120B Hardwire Ionization Smoke and Carbon Monoxide Alarm with 9V Battery Backup

$38.95

The BRK First Alert SC9120B Combination Smoke Carbon Monoxide Alarm is one of the most affordable combination smoke & carbon monoxide detectors.

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

Only 41 left in stock

SKU: SC9120B Categories: , Tag:
*All alarms manufactured after 2018* NOW WITH 10 YEAR Warranty!!! The BRK SC9120B is a great choice when it comes to affordable smoke & carbon monoxide combination alarms. Redesigned from the ground up, BRK created the SC9120B model to directly replace past models while providing greatly improved sensing technology, improved installation method, and improved connectivity. All around, the BRK SC9120B is the perfect combination alarm if you are looking for affordability with function. The SC9120B uses a superior Carbon Monoxide sensor and a dual Ionization sensor for smoke.
The BRK SC9120B uses new Smart Sensing Technology to reduce in nuissance alarms more efficiently and more accurately than ever before. The BRK SC9120B is designed for sleeping rooms in your home, hospitals, hotels, motels, college dormatories and multi-family housing units. Complies with NFPA101, UL217, CSFM, NFPA72, HUD, FHA, and other agencies. Where AC/DC silent smoke alarms are required, this model will work perfectly.
The SC9120B model has the ability to be interconnected within a circuit of alarms and other alert devices such as bells, whistles, repeaters, fans, or switches. (You can connect up to 17 devices, of which 11 can be smoke alarms, and 6 can be alternate devices.
Also integrated is a 9V battery backup to make sure your smoke alarms do not loose operation when your power fails, providing addtional security.SPECS:
Electrochemical Carbon Monoxide Sensor – the most accurate sensor available as compared to other sensing technologies
Single button test/silence
9V Alkaline Battery Backup
Latching alarm indicator – remembers which unit initiated an alarm
Two silence features – can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm
End of Life Signal provides audible notification alarms needs to be replaced
Intelligent Sensing TechnologyTM helps reduce the number of nuisance alarms
Perfect Mount – allows for easy alignment of alarm
Dust Cover
Easy Installation/Maintenance – Preferred features include a large opening in the mounting bracket for easy access to wiring. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. A battery pull tab keeps the battery fresh until the home is occupied. Battery installation and removal can occur while the unit is mounted to the ceiling or wall via the side load battery compartment. 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. 10-Years Limited Warranty

Weight .8 oz

61 reviews for BRK First Alert SC9120B Hardwire Ionization Smoke and Carbon Monoxide Alarm with 9V Battery Backup

  1. TOM BARIBEAU –

    Great service at a good price.

  2. d*****1@earthlink.net –

    Order the incorrect smoke detector, return for full refund and order the correct one at great value and prompt delivery…. Couldn’t have a better experience.

  3. MICHAEL BENNETT –

    good product and fair prices and fast service

  4. Kenneth Bailey –

    Very easy to install, the product works as described. Very Happy with the unit. I hope I never have to use it, but feel secure knowing it is there.

  5. Jason Cardin –

    This is a high quality product and to be able to buy it at a great price is fantastic.

  6. Lawrence Lalka –

    I have used Smoke Alert in the past and like then prices were very competitive with Great Service and currently dated alarms

  7. Saman1000 –

    I bought this one to replace old one. It is the second alarm that I had to replace in the past two months.

  8. Ernest T. –

    Very easy to install. Clear voice and peep.
    Glad it has a battery backup.
    Would recommend this alarm to family and friends.

  9. Eugene Cao –

    Thanks for the fast shipping. Will definitely buy from you again.

  10. Charles B –

    Replaced all my 10 year old BRK Smoke & Carbon Alarms. Stayed with BRK feel they well worth the money and have a excellent track record.

  11. MICHAEL BENNETT –

    best place to buy our smoke alert products. great prices and very fast shipping 5 stars for sur

  12. Neil –

    Replaced all 4 Smoke & Carbon Monoxide Alarms.
    Called to verify, then placed order online.
    FAST Delivery! Installed right away. And yeah, they worked. Wife tested the alarms that night by cooking something!

  13. Justin Major –

    Most places who do ship to Alaska charge a lot of money. Thank you for using USPS!! I will now purchase everything I need thru this company!

  14. DC –

    Authentic stuff at good price and fast shipping.

  15. Anonymous –

    Bought this to replace a 10 year old alarm of the same model. Was promptly sent out within a day, received it in 3 days. Alarm was manufactured recently, which is good. Pretty easy install. All working well so far!

  16. Anonymous –

    Great easy purchase. Thanks.

  17. Brannon Johnston –

    I’ve bought from here twice already and will do business with them in the future. They have the best prices around and ship quickly.

  18. Steven Ohanessian –

    Excellent service and great price

  19. Gregory Pixley –

    Flawless and efficient order and delivery.

  20. Kerry Cooper –

    Replaced the same model that were 12 years old did 3 in 10 minutes

  21. Anonymous –

    Smoke alarms were as expected. They fit into our previous places on the walls. Great to be able to get these as our new home was 7 years old for the last smoke alarms that quit. Didn’t have to change a thing! Thanks and great to help the firefighters!!!

  22. Darly –

    I have purchased twice and I have had great products and service.
    Thank you!

  23. Scott Schuchardt –

    purchased three just over ten years ago. That is the life of the alarm. Started chirping and I purchased three new units. easy to install. They work great. I love the CO alarm also. Easy to install battery backup.

  24. Matt An –

    everything showed up on time and as advertized.

  25. Robert Reed –

    I returned an unopened battery driven CO/Smoke alarm on June 4 (then ordered a 120 volt one) asking for a refund of the battery type, but haven’t received it as yet. Also, I haven’t been able to contact Smoke Alert to inquire about the tardy refund. Please reply as to the lost refund. Both alarms were sent in a reasonable timeframe.

  26. Ernest W. Pillig Jr. –

    I ordered the wrong units by mistake. All it took was one e-mail and the whole thing was straightened out. Customer service was excellent . I would highly reccomend your web site to my friends and colleagues. Thanks again , Ernie Pillig Jr.

  27. william harris –

    This was my second purchase from you and I couldn’t ask for better service or faster delivery. You folks do a great job!

  28. Jeff S –

    Excellent selection. Excellent price. Fast shipping. What’s not to love?

  29. Robert DuBey –

    Got exactly what I ordered. Order was timely, cost effective and was easily installed. Great service.

  30. Anonymous –

    Loved the free shipping too!! Thank you.

  31. William Moucha –

    The BRK First Alert smoke detector was exactly what I was looking to replace the original unit that stopped working. The unit was a perfect match that I installed in minutes and had fully operational in a matter of seconds.

  32. Clyde Sincere –

    Product is working fine and I was pleased with the responsive delivery of the product to my home.

  33. John Skrabanek –

    Very pleased. Worked great with other alarms.

  34. Anonymous –

    My local hardware store and Home Depot did not have the same detector that I wanted to replace. The newer detectors have a larger diameter requiring some retrofitting. I just wanted a direct replacement which is what I got. Easy!

  35. –

    Excellent Replacement. Easy to install and work perfect!

  36. Anonymous –

    I am very happy with the ease of my purchase and that the product was as described and worked.

  37. –

    Correct item received promptly and worked as advertised!

  38. Janice Wilder –

    This is our second time to order from Smoke Alert. They had exactly what we needed and the price was great. Their prices beat all the big box stores and smaller Hardware stores as well. Great customer service all the way, fast shipping.

  39. Anonymous –

    very pleased to find this with a ten year warranty as my last BRK combo alarm(from 2006) was not longer functional. very fast shipping and excellent price-FYI, this does NOT fit into the old housing frame with same model number-you have to swap with the new frame included in the box (which involves about 2 minutes and a regular screwdriver)

  40. Darryl Butman –

    My smoke alarm arrived just when it was supposed to and the purchase was easy.

  41. John Dee –

    SmokeAlert had the best price PLUS free shipping. The shipping was quick, the FirstAlert detector works. ‘Nuff said – I would use SmokeAlert again.

  42. Anonymous –

    Excellent product, great communication, fast shipment, returning customer, will continue buying from you, congrats!

  43. Melonie Ray –

    These were replacements. Just had to plug into my system and hit reset. Work great.

  44. Matthew Diggins –

    So far, so good. Thanks,

  45. MB –

    Product was exactly what I ordered. Shipped and arrived in good condition exactly as they said. Price was the best online and in store. Everything went smoothly without excess effort.

  46. Robert N. –

    Very easy to install. It was shipped very fast.

  47. Ronald Wilmer –

    Arrived timely, easy to install.

  48. Linda Nott –

    Very satisfied with web page, product and delivery.

  49. Thaer Mahmoud –

    Every thing worked as expected. Delivered on time and it was in excellent condition

  50. SW –

    I have these throughout my house and they work great. Although one stop working properly so instead of installing a new base for another type to replace it I bought the same one and reconnected the hardwire and put on the current base. Worked perfectly! I have not had any probleme with the new one.

  51. Ellis Schauder –

    Great product fast shipping and easy install

  52. Allen –

    Great price and quick shipping. Will definitely continue buying from SmokeAlert

  53. Toby –

    The item sent was exactly what I was looking for at a good price. Shipped fast!

  54. Karen Holly –

    N/A

  55. Mark Roussel –

    Product brand new as described and shipped FAST

  56. Anonymous –

    We ordered one their detectors to replace a defective one in our home. Most of the places I could find one, the delivery times were 10 days up to 3 weeks. I found this company, and the price was real competitive, plus the detector arrived 3 days later.

    Would definitely purchase here again.

  57. Yury Shimansky –

    Reliable, convenient, and less expensive than even on amazon

  58. Joan Jacobs –

    After shopping around for replacement smoke/CO monitors (needed 5) for our house I found SmokeAlert.net. These monitors are not cheap so I was thrilled to find these guys. Free (and fast) delivery too! Thanks guys!

  59. Richard Hyman –

    Great service on delivery….was a replacement

  60. Spencer Hancock –

    Good product and fast free shipping.

  61. Anonymous –

    Great purchase experience.. Fast shipping! A+++

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