USI 2-in-1 Hardwired Smoke & Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MI106S)

- Reviewed: 01/28/2022 by Deo M

MI106S Reliability

I have this product in my house, I damaged the one that came already installed in the house. I replaced with this exct model because of their functionality and sensibility to smoke.

- Reviewed: 01/04/2022 by TSP

Highly recommend Universal Security Store.

It was a pleasure doing business with this company, especially the nice lady in the office who helped with a billing question—very polite and helpful. Shipping was fast and product arrived in good shape. At 70 years old, I was on my own with replacing 7 wired alarms. USI instructions are thorough and easy to understand. I also did other reading about dealing with electrical wiring. After turning off the power supply, which was wired separately from the rest of the house, I also used a voltage meter to be sure no power was detectable. Although, it would have been nice to just plug in the existing harness, I used the existing wiring nuts with the connector that came in the box with the USI alarms. I used the third yellow wire for interconnecting the alarms. I pulled the tag to activate the 10-year battery and each alarm sounded as expected to ensure activation. After I put the seventh alarm in the backplate, I turned on the power and all lights were green. I tested each alarm and all worked and I could hear that they were properly interconnected. One try and done! It is important to know that if the backplate screws are too tight, the alarm will not fit under the tabs for hanging it.

- Reviewed: 12/24/2021 by Alan D

Worked great

All alarms in house I bought were 14 years old. Same brand different model. Plugs were identical, but had to change the bases. These worked great. I like not having to change batteries every year. Cheaper in the long run.

- Reviewed: 12/24/2021 by Joe L

Smoke and fire smart alarm

Replace all my smoke detectors in the house with this replacement easy to install and they were great highly would recommend them for your house I have a 10 year warranty on the smoke detector and add the battery

- Reviewed: 12/21/2021 by Andrew M

Fast Shipping and Reasonable Price

I have not installed the alarms yet, but they came quickly and the price was right. I purchased this product for its dual sensors and hardwired interconnect capabilities.

- Reviewed: 12/01/2021 by Stephen F

Great replacement for old sensors

Our old smoke detectors were about 10 years old and starting to give false alarms. I ordered 7 of these and received them promptly. I thought I could use the same plugs from the old Kidde detectors, but found that they were wired differently than these new ones. Installation was quick and easy and I love the 10 year battery life. No chirping in the future!

- Reviewed: 11/30/2021 by Jack K

Installed 1 and have the 2 others for backup. Everything working fine at this point. I will be interested to see how long the other originals will last4 of them are 4.5 years old on a 10 year warranty

- Reviewed: 10/11/2021 by William L

Excellent product

Worked well. Good value for the money. Quick shipping direct from manufacturer. Return items were accepted. Waiting for refund

- Reviewed: 10/05/2021 by Phil B

Smoke detector

Unit has great feature of never have to change the battery. That feature is why I chose this product

- Reviewed: 10/05/2021 by Phil B

Hard wired smoke detector

I selected this product because it has the 10 year lithium battery that does not need changing. This is a great feature.

- Reviewed: 09/17/2021 by James K

MI106S unit

Chose this unit primarily because my old alarms were USI. They lasted much longer than their expected lifespan. Also because of the 10 yr battery backup. Installation was simple and quick. I won't miss replacing the batteries like I used to do.

- Reviewed: 09/07/2021 by Andrew L

Best long lasting Smoke Detectors

I have to look for these long lasting 10 years lithium battery powered units. I cannot tolerate those middle of the nights beeping smoke detectors when I'm sleeping.

- Reviewed: 08/23/2021 by William L

Well worth the money

Once I bought the proper adapters, installation was fairly simple and the product seems to work well.

- Reviewed: 08/19/2021 by DONALD L

Great Alarm

Great technology, easy install and at a very good price.

- Reviewed: 08/07/2021 by Steven F

Great product

These smoke alarms were exactly what I was looking for. I really wanted a 10-year battery nobody likes the low battery warning chirps, and these do the trick. Easy to install, especially since I previously had the same brand detectors…so I was able to re-use existing connectors.

- Reviewed: 08/04/2021 by OJ P

Quick and Easy Install

Second purchase made for these smoke detectors. Pleased with the simple install and quick replacement of older outdated models. Instructions are simple to follow and replacement was straightforward.

- Reviewed: 07/30/2021 by JK

Great product

Easy installation, glad I don't have to replace battery for 10 years!

- Reviewed: 07/13/2021 by Michael S

Good buy on a good product

Finding a reasonably priced dual-detector smoke alarm wasn't easy -- until I found the USI 2-in-1 smoke and fire alarm The 10-year worry-free battery is an added bonus -- no more middle-of-the-night low battery alarms for the next decade!

- Reviewed: 06/22/2021 by Robert K

Great smoke alarms

Received correct products quickly and in perfect condition. Easy to install and activate. My go-to company for these products.

- Reviewed: 06/20/2021 by Rick S

Hardwired smoke alarm

prompt service, good communication, fast shipment

- Reviewed: 06/16/2021 by Cindy M

2 in 1 hardwired smoke & fire alarm

Easy installation. Sleek looking. Nice.

- Reviewed: 06/04/2021 by Howard M

Excellent Product

This product was a wonderful purchase. I got all of things that I was looking for in a smoke alarm for a reasonable price.

- Reviewed: 04/30/2021 by Theodore T

no battery change for 10years

easy to install

- Reviewed: 02/20/2021 by Ross Wilchek

Quick and easy installation

I'm happy not to have to replace the batteries for the next ten years.

- Reviewed: 02/12/2021 by Charles Casey

Replaced old style with 9V battery

Customer service assisted with making the best choice to replace old style 9V batter USI units with MI106S. It wasn't an exact replacement but SOOOO easy to install. I wish I would have done this years ago. Were also using the MI106S in our 2000 sqft addition. One lesson learned was to make sure you replace ALL the old style non-compatible alarm units. I forgot one hidden in a hall and fried the last in the daisy chain new unit. it was my fault. Inventory your current units and make sure you get them ALL before you turn the AC supply back on.

- Reviewed: 02/09/2021 by Brian Thunstrom

Perfect

After seeing news stories about the different types of residential fires that have killed people because their smoke alarms weren't the right kind, I knew I needed to upgrade. These were the perfect choice. They were easy to switch out with my old hard wired alarms. They also have the bonus of the 10 year battery so no annoying chirps at 1am when the 9 volt backup starts to die and needs to be changed.

- Reviewed: 01/26/2021 by Ken Gladney

Great product. Easy to replace & Install

I just replaced all of my smoke, fire, and carbon detectors in my home with the 10 year sealed battery units. I had original USI detectors in my home when we purchased the home 12 years ago. Replacement and install of 9 units was very easy. The big plus is I don't have to change 9 volt batteries twice a year, and deal with the annoying chirp. Great product!

- Reviewed: 01/18/2021 by Sajish Jacob

Top product

Well made. Easy installation.

- Reviewed: 11/30/2020 by Paul Mueller

Easy Install

These were very easy to change out with my old detectors. Replace the base plate, plug the existing wire harness in and go.

- Reviewed: 11/27/2020 by Harry Swope

2-in -1 alarm

Having both types of detectors is a big plus. 10 year battery was a feature that was essential to us - no more annual chirping from replaceable batteries. Discount for buying 6 was appreciated. Installation required care but was manageable.

- Reviewed: 11/27/2020 by JD

Perfect fit

Bought 8 of these to replace my current detectors when they hit expiration. They were easy to install and fit the space exactly. Tested and all work great. Love the fact the batteries are good for 10 years. Took me less than 2 hrs to replace all 8.

- Reviewed: 11/26/2020 by Amy Hogan

Set purchased

Had to attach the new style quick connect plug as these did not fit the old hardwired quick connect. The process was easy and straightforward. All the smokes work perfectly and communicate with each other.

- Reviewed: 11/26/2020 by Dr Jack Rink

Easy to Install

Through guidance from your company were were able to replace our old USI 11 year old units with the exact new ones to be able to only have to plug them in without the wiring task. Great support! Clear Instructions too.

- Reviewed: 11/25/2020 by Maneesh Gauba

Great product and price!

Easy installation!

- Reviewed: 10/30/2020 by Jay Silva

Great smoke alarm but poor instructions and mediocre customer service

The smoke alarms are really nice and easy to install. One issue I encountered though was that the plug I had was exactly the same but the wires for the model I had before had the hot and neutral wires switched. I destroyed the smoke alarm and it caught fire when I plugged it in. Customer service responded quickly and suggested a wiring issue. I suggested putting a label on the alarm indicating that they need to use the pigtail they send because other pigtails even with the same adapter may have the wires switched. There was crickets to my suggestion or an offer to discount the replacement unit. Full circle customer service should not be expected.

- Reviewed: 10/10/2020 by Carlton White

Easy to install

Replaced my old alarms with these. Took about 5 minutes for each one.

- Reviewed: 10/02/2020 by Thomas Piediscalzo

Good Choice for safety

- Reviewed: 07/13/2020 by Richard Thaxton

Fast shipping/easy installation

Ordered these as a replacement for the original alarms, also USI brand, that were installed when the house was built in 2009. They arrived quickly and were a snap to install. Needed 11 so I order two 6 packs. This was the best deal I could find on the internet even though I was going to end up with one extra. Replaced 11 detectors in under two hours.

- Reviewed: 07/10/2020 by Steven MacDonough

Quick and easy

Updated to new 10-year battery life units. Ordered on website, delivery was very quick and installation easy.

- Reviewed: 07/09/2020 by Nancy Barbeau

Excellent smoke detectors

The previous owner who built the house had USI Electric smoke detectors. I knew he researched everything, so I was confident that these were the best on the market. Doing my own research, I confirmed that. I upgraded to a model with an enclosed battery, since I have 10 detectors and high ceilings, making changing batteries every year a real hassle, not to mention the expense of the D batteries. I just had them installed yesterday by a licensed electrician as recommended. I like the design, as it's not overly large and has the same footprint as the previous ones. Very happy with the purchase.

- Reviewed: 07/01/2020 by Dirk Stiggins

alarms

I found the smoke detectors to be exactly as described. They were relatively easy to install and the beeper was louder than the old alarms I replaced. I really like the fact that I don't have to change the batteries on a yearly basis.

- Reviewed: 06/27/2020 by Charles Hardesty

7 smoke alarms

I hooked up the new smoke detector as the directions said. All went as it should. Very easy to understand and install. Last 10 years without changing batteries.

- Reviewed: 06/24/2020 by Seth Olitzky

Works fine but not plug compatible

I bought these as replacement for my ten year old USI-5204. Customer support told me that these would match the electrical connectors exactly but that I would have to replace the mounting brackets. I didn't want to have to do electrical. They were wrong. The old electrical connectors would not seat into the new detectors and stay snug. In the end I had to change all of the electrical connectors. This was not what the company told me.

- Reviewed: 05/05/2020 by Dan Clark

???

Product delivered on time and performs as advertised. Thank you.

- Reviewed: 04/22/2020 by Thomas McClenahan

2 in 1 hardwired 10 year smoke sense

The smoke detectors are the topnotch detection. With the 10 year lithium batteries I can rest easy for 10 years. I had an issue with one detector on a previous order. I was very pleased with customer service. They responded quickly and had me send the old unit back, covering shipping and sent me another in short order. A great company to deal with. USI has all my future business. And I gladly refer them to my associates.

- Reviewed: 04/10/2020 by CHRISTY KELLEHER

Easy to install

Received the alarms. I like the sealed battery option. I was replacing expired USi alarms so, no rewiring needed, they plugged in perfectly. I had to replace the old mounts but it was easy to do.

- Reviewed: 04/06/2020 by Gregory Stich

Solidly made, easy install.

I was replacing 10 year old USI alarms that started beeping at midnight one night. I was not aware that smoke detectors had an expiration. Anyway, I specifically ordered this brand because I figured the install would be much easier -- reuse the base plate and plug...right? No, thenew & improved one was slightly different so I had to replace everything. Still, a fairly easy job.

- Reviewed: 03/30/2020 by RICHARD RESTIVO

USI MI106S Hardwired smoke

Yhis product is far superior to the previous models that i had in the ceiling. They were so easy to replace with the new base plate. they went up in a snap and testing was easy than before. Great product

- Reviewed: 03/28/2020 by Donald ONeill

Excellent customer service and installation was simple.

- Reviewed: 03/06/2020 by Sirak Sebsebie

GREAT

Great choice

- Reviewed: 02/05/2020 by Tom Cole

Nice looking units. Come with very nice paint shield installed that is easy to remove. Only negative is I liked the mounting base on my older USI smoke detectors better. They were stronger and deflected less when tightened and the screws from standard 4 octagon box fit the plate better.

- Reviewed: 01/16/2020 by Ben Christensen

Initial quality is there

Time will tell if the 10 year sealed battery will hold up, but initial installation was fairly easy and dual sensing technologies in one device, and having updated all detectors throughout the house gives me a sense of security and satisfaction! Looking forward to not having annoying low-battery chirps which inevitably go off at 2am! Happy 2020, see you in 2030 when I will replace them again... with any luck, battery technology will have evolved in this decade so the generation of 2030 products will have a sealed battery for 20+ years!

- Reviewed: 01/02/2020 by DAVID OBERRY

Positive

Worked well as described

- Reviewed: 12/16/2019 by Joseph Griffin

MI106S

I am just installing these today so I cannot comment on false alarms or performance issues. However, I found it easy to replace my old USI hardwired units with the new units, even though I had to install the new connectors/wiring and the new mounting plate.

- Reviewed: 12/11/2019 by Paul Sizemore

Nice looking and fit over the previous alarm cut-out so seamless install. Also, Universal was easy to deal with and quick delivery.

- Reviewed: 11/29/2019 by Dan Lyons

Great to Deal With!

The four MI106S smoke alarms that I purchased were to replace four, 20 year old USI products. They arrived in great shape and were a breeze to install. The best part was working with their Customer Service department. The young lady offered her recommendation for the replacement units. She responded promptly to my emails to USI. Thanks !

- Reviewed: 11/08/2019 by John F Russo

Pleased-1

excellent quality and simple installation

- Reviewed: 08/23/2019 by J. G.

Excellent product

Ordered seven new alarms to replace outdated FireX alarms in my home quick and easy change over...ordered direct and got a great price. Happy property owner!

- Reviewed: 07/09/2019 by Julie Anderson

replacement detector

We replaced our detectors as we were tired of the batteries needing replacement in the middle of the night. The customer service representative was very helpful helping me figure out which unit to buy. Really can't comment on how they work as we haven't had any type of fire.

- Reviewed: 06/28/2019 by Gary Bell

Replacements

Easy to install. 3 wire system. Replaced 8 old fire detectors with new 10 year detectors. No wiring just easy.

- Reviewed: 06/25/2019 by Joseph Milano

Replaced old fire alarms. Needed to change the base but otherwise easy install. Have not had the opportunity to test these out as I have never had a fire. The test button works well. All interconnected and work together.

- Reviewed: 04/03/2019 by DAVID OBERRY

Positive

These appear to fit the bill at better cost than a retail store. Have been using them in client's homes - only caution is to pull activation tab carefully to ensure full activation

- Reviewed: 03/14/2019 by John M Gould

Easy as Pie

I replaced 7 detectors and it could have been easier. I had to change out the old mounting brackets to the new ones included, which was super easy two screws. The new detectors plugged right in and I was done in no time. Just follow the instructions. It was a pleasure to not have to deal with any annoying beeping during the replacement process.

- Reviewed: 01/26/2019 by Sam Dolinsky

Perfect

Replacements for our 10 year old plus USI units were installed simply by our local fire department who took note of the USI products to recommend to others - nice recognition.

- Reviewed: 01/16/2019 by Rollin Nash, Jr.

I needed to replace 7 units that had expired over 10 years. I asked Michelle what new units were available that were compatible with the old units. Michelle gave me several options and the new units I choose could use the same plug from the old units. So installing each new unit took about 2 minutes for each unit. I spent more time moving the ladder than it took to install them. Michelle was very quick to respond to my email. I choose units that have a 10 year sealed battery, so now I don't have to change batteries every 6 months.

- Reviewed: 12/11/2018 by john miraglia

review

The product eliminated my having the climb a ladder every year to replace a battery.

- Reviewed: 11/29/2018 by Lawrence Laczko

Home Detector Changeout

Replaced all the old units in my house in about 30-40 minutes. Easy & quick replacement. Videos on line were very helpful, but nothing was complicated and all worked. Great product & now peace of mind that everything is working.

- Reviewed: 11/29/2018 by S Rebecca Keith

The whole experience was top notch. We had excellent support electronically with Michele Metcalf. She recommended what to get, it came quickly, without trouble. There was even a defective one. When we pulled the tab, it didn't alarm. We were told to send back and another would be sent. Top notch service and will work again with this company when needed. It is much appreciated to have wonderful customer service. You don't get that too often these days. :

- Reviewed: 10/11/2018 by SACHIN PATEL

I'm a USI customer since 2010 and very happy with product, just change entire home fire smoke detectors and was very easy changing and installation. Very happy with this products

- Reviewed: 10/03/2018 by Fred Reikowsky

Easy hookup.

- Reviewed: 08/18/2018 by Steve Henry

So far so good but they'll be up for 10 years so it's hard to give a rating of 5 after 10 days.

- Reviewed: 07/26/2018 by Rebecca Pappalardo

NEVER up in smoke!

Received product in timely fashion. I had these installed throughout my entire home and I love them. I never have to remember to change the battery. I have 8 in my home and changing batteries yearly is the last thing I want to do. No regrets!!!

- Reviewed: 07/24/2018 by Dan Schuerman

Smoke alarms

I purchase 7 units. Very easy to install. Work well, Very loud alarm will surely wake you. They are 10 year alarms so no battery changes.

- Reviewed: 05/26/2018 by Hao Nguyen

Very good price for the feature

Easy to install and very price for 2-in-1 smoke and fire alarm

- Reviewed: 04/25/2018 by Arthur Lourenco

Very pleased

Received MI106S alarms & replaced old alarms quite easily. Had problem with 1 malfunctioning and Customer Service rep Michele promptly authorized return with replacement coming soon. Excellent product.

- Reviewed: 03/26/2018 by Justin Frederick

Easy install.

Easy install and nice product.

- Reviewed: 03/20/2018 by Monte Welch

Answer to a Prayer!

This product is well worth the money! Not having to climb a ladder at 3am to replace a dead battery is worth every penny! Highly recommend this smoke detector.

- Reviewed: 03/07/2018 by Julie Popelka

Great Alarm

This alarm helps us put new alarms in older adult homes. They will no longer need to worry about changing batteries.

- Reviewed: 03/05/2018 by Rosemary Burke

Linked dual dectector

Replaced 6 with the ease of no 9 volt replacement

- Reviewed: 01/30/2018 by Linda Pinder

Happy customer.

Excellent quality and very easy to install. These replaced 2 older USI units and went in seamlessly. Highly recommend.

- Reviewed: 01/25/2018 by Lisa Katsounakis

Great customer service

User friendly website and great customer service. Products arrived promptly.

- Reviewed: 01/17/2018 by Robert Slaughter

USI 2-in-1 Hardwired Smoke & Fire Smart Alarm

Easy to install and no more random beeps. Also we had an accidental test when fry pan was left on burner to dry and was left on too long. Fire alarms all went off to let us know there was a little smoke in the house. Not having to replace batteries every year is a great plus.

- Reviewed: 01/05/2018 by Kevin Graham

works good

Hi, had to replace my detectors since they were starting to go off when I cooked. They were 10 years old. I ordered 2 iono detectors 3 photo detectors and 1 carbon monoxide one all 10 year sealed and wired ones. They all installed and worked good and solved my cooking problem. Also the customer service was very responsive and the items were shipped quickly A+. Kevin

- Reviewed: 12/12/2017 by charles fairless

interconnected dual sensor alarms

Replaced 4 old interconnected hardwired smoke detectors with Universal's hardwired 10 year sealed battery backup dual sensor smoke & fire alarms after using their sealed battery smoke detectors for a few years. Look forward to 10 years of not having to change batteries annually. Products work exactly as advertised.

- Reviewed: 10/09/2017 by Virgil Hull

Dual smoke detector

Excellent product...easy install!

- Reviewed: 09/21/2017 by Tyler

Replaced 2 older USI smoke detectors with these units. Simple installation and great that they have a sealed 10 year backup battery! Looking to replace the last older model unit with one more of these.

- Reviewed: 08/30/2017 by Robert Terrano

replacement unit

I replaced an older style smoke alarm. I made a plug in adapter for this unit and it was a 5 minute installation, I love I don't have to replace batteries.

- Reviewed: 08/15/2017 by Steve Sellers

Seems to be a good product. Other USI products in use had expired and needed to be replaced. Some difficulty in installing ceiling plate to hold alarm. Once installed, alarm works well. Took several days for the alarms to be received through normal mail process.

- Reviewed: 07/03/2017 by Kevin Morgan

Smoke Alarm Replacements

Easy to install. Replaced 10 year old USI smoke alarms so the wired connection was simple.

- Reviewed: 06/26/2017 by Mark Lindsay

Easy setup and install

We order these alarms for our properties because they are easy to setup and install.

- Reviewed: 06/06/2017 by Douglas Reep

No Annual Battery Changes!

Nice units, and no hassle of replacing batteries every year. Hopefully, the false alarm issues we had with some of our older USI units have also been fixed.

- Reviewed: 06/06/2017 by Douglas Reep

No Annual Battery Changes!

Nice units, and no hassle of replacing batteries every year. Hopefully, the false alarm issues we had with some of our older USI units have also been fixed.

- Reviewed: 03/17/2017 by John Scarlata

Easy Install

I replaced all of my bedroom detectors with the 2 in 1 Smoke and Fire alarm. The installation was straight forward and I like the idea of not worrying about replacing the battery

- Reviewed: 02/08/2017 by Michael Ende

Solid detectors

Easy to install, and packed with features. Great value in dual sensing technology.

- Reviewed: 09/28/2016 by Edward Hollis

Easy to install

Easy to install, great products, like the 10 year battery.

- Reviewed: 09/12/2016 by Bruce Knapp

All-in-one for me

I did a lot of research when I found this alarm - I wanted 2-in-1 detection, a backup battery I did not have to check/replace for a long time and a reasonable price. I ended up buying 5 to replace my older units in my home.

- Reviewed: 07/12/2016 by Ronald Kading

Very pleased with product. Easy to install. I could not believe the service, I ordered alarms one afternoon and the following day they arrived. Would highly recommend this company and its products.

- Reviewed: 06/03/2016 by Michael A Kreps

Great pricing and service.

- Reviewed: 05/24/2016 by David Wambeke

Seems to be excellent detectors and at a good price! Photoelectric/ionization type combination units are not that easy to find, and with a 10 year battery, should be a great product!

- Reviewed: 05/19/2016 by Michael A Kreps

Save Lives - Upgrade

My detectors had reached the end of their life cycle and I installed 6 replacements in under an hour. Better detection and a 10 year battery. A win-win situation for myself and my family.

- Reviewed: 02/11/2016 by George Daleo

Easy to install and working fine and look forward to it lasting 10 years. Both items arrived on time

- Reviewed: 02/11/2016 by George Daleo

Easy to install and working fine and look forward to it lasting 10 years. Both items arrived on time