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Internet # 334546952

Model # USI/SM/10YR/3

Store SKU # 1013748584

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(3-Pack) 10-Year Battery Powered Smoke and Fire Detector with Ionization Sensor

Includes 3 units
$79.97
($26.66 /unit)
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  • Advanced ionization technology for early detection
  • 10-Year sealed battery ensures continuous protection
  • Tamper-proof design prevents accidental removal
  • View More Details

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Product Details

About This Product

Experience unparalleled protection with the USI Smoke Alarm with 10-Year Battery. Equipped with Sensing Plus Multi-Criteria Detection, this advanced ionization alarm accurately identifies both slow-burning and fast-flaming fires, ensuring early detection and rapid response. It features a 10-Year sealed battery that ensures continuous protection. Replace annoying yearly low-battery chirps with a single end-of-life alert after 10-years to remind you it's time to replace your smoke alarm. Advanced technology reduces nuisance alarms, minimizing disruptions from activities like cooking. Should you experience a false alarm, easily silence it with the test/silence button. With UL certification, you can trust in the reliability and performance of USI Smoke Alarms. Invest in peace of mind and protect your loved ones with this advanced home safety solution. With over 50 years of experience as a leader in home safety, USI provides reliable, long-lasting protection for your home.

Highlights

  • Click here to view the Entire Universal Security Instruments assortment
  • Sensing plus multi-criteria detection accurately identifies both slow-burning and fast-flaming fires
  • 10-year sealed battery - eliminates low battery concerns and ensures continuous protection
  • End-of-life alerts - provides timely reminders for alarm replacement
  • Superior false alarm resistance - reduces nuisance alarms, minimizing disruptions
  • Meets the requirements of leading safety organizations: underwriters laboratories (UL) 217 8th Edition, Federal Housing Authority (FHA), Housing and Urban Development (HUD), and the National Fire Protection Association (NFPA)
  • Easy Installation - Simple setup for hassle-free installation
  • Tamper-proof alarm design engineered to prevent unauthorized removal, disassembly, or battery access
  • Dust/Paint Cover - Protects the alarm during construction or renovations
  • 85 decibel alarm can easily be heard from a distance or wake family members from sleep for fast response
  • 10-year limited warranty on alarms
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 334546952

Model # USI/SM/10YR/3

Store SKU # 1013748584

Specifications

Dimensions

Product Depth (in.)

1.7 in

Product Width (in.)

5.6 in

Details

Alarm Sensor Type

Ionization

Alarm/Detector Features

10-Year Battery, Hush Button, Light Indicator, Tamper Resistant

Alert Type

Siren

Battery Type Required

Built-In

Commercial/Residential

Home

Included

Batteries, Installation Kit, Mounting Hardware, Owner's Manual

Pack Size

3

Power Source

Battery

Returnable

90-Day

Voltage (V)

0 V

Warranty / Certifications

Certifications and Listings

ETL Listed

Questions & Answers

I am looking for a replacement to my old smoke detector, Universal Security Model MI3050S. Is this model a replacement, and will it fit on the original bracket I have mounted on the wall? PS, I am not computer savvy and would send a photo if I have your
ByJul 10, 2026
1 Answer | 
Answer This Question

Thank you for your question, this would be a great replacement for your legacy unit.

By|Jul 14, 2026


    Compatible with USI Ml106S for interconnecting?
    ByMay 21, 2026
    1 Answer | 
    Answer This Question

    Thank you for your question, these will not interconnect. UL 217 6th Edition hardwired ionization alarms are not directly compatible or interchangeable with UL 217 8th Edition alarms. These models differ significantly in performance standards, testing requirements, and detection technology, particularly in how they respond to smoldering fires and modern nuisance sources.

    By|May 21, 2026


      How wide is the base. I see the unit is 5 inches, but how big is the base?
      ByFeb 23, 2026
      1 Answer | 
      Answer This Question

      Thank you for your question, the base measures at 6 inches.

      By|Mar 4, 2026


        are they a one time use. In other words, if the smoke alarm goes off, do you have to replace the entire unit
        ByFeb 3, 2026
        1 Answer | 
        Answer This Question

        Thank you for your feedback, we are sorry to hear about the issue with your product. At your convenience feel free to contact us before returning to your retailer, please contact customer service at info@universalsecurity.com for assistance.

        By|Jun 29, 2026

          (1)

          Does it fit in existing hardwired mounting plate?
          ByJan 23, 2026
          2 Answers | 
          Answer This Question

          Thank you for your question, we would suggest using the mounting plate that comes with the unit.

          By|Jan 23, 2026

            My Son is on his way to pick up my order dries it include batteries or does it fit the hardwired system oof my current detector

            By|Mar 5, 2026


              Is the indicator light showing green to indicate it’s working? What if it shows red?
              ByJan 18, 2026
              1 Answer | 
              Answer This Question

              Thank you for your feedback, we are sorry to hear about the issue with your product. At your convenience feel free to contact us before returning to your retailer, please contact customer service at info@universalsecurity.com for assistance.

              By|Jun 29, 2026


                Is the indicator light next to the test switch always illuminated, or does it light up only when the test switch is pressed? In bedrooms I do not want to have any light on the unit.
                ByJan 8, 2026
                1 Answer | 
                Answer This Question

                Thank you for your question, this unit will have a light present when in proper function.

                By|Jan 8, 2026


                  In the unlikely event of early battery failure, what is the warranty process to follow ?
                  ByDec 30, 2025
                  1 Answer | 
                  Answer This Question

                  Thank you for your feedback, we are sorry to hear about the issue with your product. At your convenience feel free to contact us before returning to your retailer, please contact customer service at info@universalsecurity.com for assistance.

                  By|Jun 29, 2026


                    Viewing 1-8 of 20

                    Customer Reviews

                    4.7 out of 5

                    • 4.7 out of 128 reviews
                    • 94% recommend this product
                    Filter by:
                    Showing 1-10 of 128 reviews
                    Easy to install, looks good, great price for the 10-year smoke detectors. The Testing instructions were simple and we bought 8 of them and they all worked as expected.
                    by
                    Great
                    Nice pack of smoke detectors. Like that it comes in a three pack so that you have multiple to go around the house. Easy to install. They come with the extra bracket plates to help make them fit to your ceiling. They seem to not be overly sensitive when there’s other Things in the house such as smoke from cooking, would definitely recommend these to anyone.
                    by
                    Response from Product ExpertNov 10, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    Economical package and a 10 year battery
                    These smoke detectors are packaged in an economical three pack, which is brilliant. Instead of buying three single, they’re in one package. I also like the ten year battery. Never changing, or forgetting to change, 9 volt batteries twice a year. Also, nothing else in my house uses a 9 volt. The battery is activated when you pull the tab, so no aging on the shelf.
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    2 found this review helpful
                    2 in 1 smoke and fire alarm
                    This review is for the Universal brand smoke and fire alarm. I didn't know there was a difference between smoke and fire alarms until I received this product. They have combined 2 in 1 with this unit. It also comes with a 10 year battery life. Also says it has no low battery chirp warnings. Alarm will sound in 10 years to remind you to replace the unit.
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    Great ionization fire and smoke detector 3pk!
                    Great universal smoke and fire alarm set of 3. easy to install, 10 year battery life. these are ionization type smoke and fire detection, so I feel they are more accurate than the other types. The alarm is loud and will definitely alert us if there is an issue or actual fire. Installed all 3 in about 30 minutes, replacing my previous ones that were about 10 years old. Looking forward to years of protection!
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    2 found this review helpful
                    Never replace this battery!
                    I like the fact that this is a multi-detection monitoring device. What I mean by that is that it has a way to tell you whether it is smoke or if it is fire with better accuracy. The cool part is that they're telling us that we will never have to replace the battery and it's good for 10 years so that is awesome. Because of that, guess what?... You won't hear those low battery chirps that can drive somebody crazy. So for that alone I give it five stars! It has a better resistance for the false alarm noises when you're doing things like cooking because if you're like me, I barely do anything and my old one would sound off. I guess that doesn't say much for my cooking? It comes with a dust/ paint cover so you can use it if you are renovating or doing any kind of construction and then you just pop it right off. And as far as installation it is installed in less than 5 minutes. It comes with the mounting bracket and all the screws etc. That you would need. My old alarm....you had to pop it open and hit a button, If it did go off and on this universal smoke and fire alarm... You can quickly silence the alarm with a button that is fairly large and easy to see. (That's on the outside of the alarm itself.) Hope all this helps and I would definitely recommend this product!
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    The most convenient fire alarm
                    This smoke and fire alarm is brilliant! A ten-year battery with no possibility of being woken up in the middle of the night by the low battery chirps. The alarm is super loud so it works well in a hallway for occupants of multiple bedrooms to hear or in a basement away from the main part of the house. Installation is like any other alarm - just attach the mounting bracket with two screws/wall anchors and screw on the main housing. This is also perfect for mounting in hard-to-reach places like the wall of a high vaulted ceiling (somewhere you only want to climb to every ten years!).
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    Change them all at once!
                    So I have been in my home for a few years and have randomly had smoke alarms expire. I was happy to pick up this set of 3, so I can change all the remaining at the same time, not having to worry for 10 years. The built in battery is a great feature, so I don't have to worry about 9v batteries and when I should change them. it has sensing plus feature to help detect real smoke and fire with less false alarms. The paint cover is a nice touch as when I removed my old detector, I noticed that I need to paint the ceiling, now that it is hung up there I can just use the cover to protect while I paint. I appreciate the mounting bracket with large slotted mounting holes as I was able to line up with the exiting holes from another brand. I installed, tested with the button, they were super loud and I have not had any false alarms yet. Just a good solid smoke alarm.
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    These are great for easy home protection
                    These are great for easy home protection. We have used this one before and it was great at detecting even a small amount of smoke from burning things in the kitchen. They last for a full 10 years and the mounts work from the older units making it super simple to just twist and lock into the existing housing. The color is a good white to match our ceilings and they don't yellow over the years.
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    1 found this review helpful
                    3 pack
                    The universal 2-in-1 smoke and fire alarm is a great product. This comes as a three pack with everything you need to install. It also comes with a 10-year warranty on the battery and alarm. All the instructions and hardware is included. These are very easy to install using the provided hardware. It's only two screws also comes with anchors for the screws. I upgraded the anchors as I don't feel the ones provided were good enough.
                    by
                    Response from Product ExpertAug 21, 2025
                    Thank you for your feedback and for choosing Universal Security Instruments products for your needs.
                    • Recommended
                    Showing 1-10 of 128 reviews

                    Compare Key Features

                    current item

                    Product Snapshot

                    Ideal for homeowners looking for 10-year battery life, making replacements easier.
                    Ideal for homeowners seeking enhanced fire safety with 10-year battery, photoelectric sensor, and 85dB alarm, ensuring reliable protection.
                    Ideal for homeowners seeking enhanced safety with a 10-year battery life, photoelectric sensor, and UL certification ensuring long-lasting protection.
                    Ideal for homeowners looking for photoelectric smoke detectors, ensuring early smoke detection and 10-year battery life.

                    Sensor Type

                    Ionization
                    Photoelectric
                    Photoelectric
                    Photoelectric

                    Battery Life

                    10 years
                    10 years
                    10 years
                    10 years

                    Interconnectivity

                    Self-Diagnostics

                    Silence Button