The Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm provides 10 years of continuous protection against deadly threats in the home. New patented Universal Smoke Sensing Technology provides the benefits of both photoelectric and ionization alarms in one device to protect against fast flaming and slow smoldering fires. This smart alarm also offers protection against the silent killer - carbon monoxide - making it a 3-in-1 detector. The ideal addition for new or replacement installations, this maintenance-free alarm is suitable for houses, apartments and mobile homes in every room.
This 3-in-1 smart alarm utilizes a sealed battery (included) that will never have to be replaced throughout the life of the detector, giving you a decade's worth in peace of mind even in the event of a power outage. Permanent Power also saves money from battery replacements (up to $38.00 over the 10-year life of the alarm), eliminates annoying low battery chirps and helps the environment by reducing environmental waste from disposed batteries. This alarm features microprocessor intelligence to completely eliminate nuisance alarms, a single silence/test button to quiet a non-hazardous alarm and an end-of-service life warning that sounds when it's time to replace the alarm (approximately 10-years from activation).
This USI Combination Alarm conforms to UL217 and UL2034 standards. It is also California State Fire Marshal approved and Federal Housing Authority (FHA) approved to exceed industry standards. The Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm comes with a 10-year limited warranty that covers both the alarm and battery.
Warranty: 10 Year Limited Warranty on both the battery and alarm
USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide 10-Year Alarm - MIC3510SB Videos
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USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide 10-Year Alarm - MIC3510SB Reviews
3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm
Reviewed: 09/02/2021 by bob m
Great all in one product to keep family safe and secure
proven smoke alarms
Reviewed: 08/31/2021 by JAMES W
Consumer Report gave this model as the #1 rating among some other well known brands . This is good enough for me to decide.
Bought two to replace old expired detectors
Reviewed: 08/27/2021 by Chuck L
Highly rated ... easily installed ... provides more protection than those replaced. Old ones did not detect carbon dioxide. Sleeping better already! Easy purchase ... fast delivery.
best choice on the market
Reviewed: 07/11/2021 by Anne L
A local big box store was out of these with no replacement info available. Bought the same model directly from Universal and saved $79 for shipping that the big box store was charging to send 2 detectors which was more than the cost of the items. Will buy directly from Universal again when I purchase my new house.
Reviewed: 06/25/2021 by Dean H
Easy installation. For anything more, ask me again in 10 years.
Top rated by Consumer Reports
Reviewed: 06/17/2021 by Erin L
I was planning to purchased hardwired units w battery back up but Consumer Reports gave these great ratings.
First time user
Reviewed: 06/15/2021 by Scott H
Based on trusted reviews, this model beats all of the rest by a lot, mainly on effectiveness for open fire. Got a good price on a set of five to replace all of our old ones. No more batteries every year and should be way fewer false alarms. Easy to install and activate. So far no issues. Definitely recommend.
Peace of mind
Reviewed: 06/12/2021 by Beth N
I only discovered recently that most smoke alarms do not detect both smoldering and flaming fires. This alarm does both, plus detects CO. The 10 year battery is a huge plus.
USI 3 in 1 Smoke, Fire, CO Alarm
Reviewed: 06/08/2021 by Gerald C
Received a top rating from Consumer Reports. Priced right, delivered on time and easy to install. No batteries to climb to my 12 ft ceilings to change. Plan on getting another one for our other bedroom that does not have a CO alarm!
great combo smoke/CO alarm!
Reviewed: 06/08/2021 by linen p
these were easy to install and so far no false alarms....will definitely purchase again!
Simple and effective
Reviewed: 05/31/2021 by Dan F
High quality industry leading combination smoke and co detector is simple and effective. No need to worry about battery replacement is a huge plus
Reviewed: 05/28/2021 by Carol G
I purchased a home and my inspector recommended I get a combination fire, smoke, and CO alarm. In researching which is best, this is the only one that works well at detecting all three. I hope it never goes off, but it's nice to know it will work well.
Best Combination Smoke and Carbon Monoxide Alarm
Reviewed: 05/28/2021 by Kirk B
I bought 3 because of the reviews online from Consumer Reports
Received and installed
Reviewed: 04/30/2021 by Linda T
Universal was great to deal with. Ordered on back order. Treated nicely when called. Delivered promptly when in stock. Can say easy to install. Test fine but no fire yet. Don't plan any.
wonderful and no more batteries!
Reviewed: 02/17/2021 by Lynn Wilson
This all-in-one smoke alarm is wired into the house and has no need to change batteries every year. Great Value, easy to install.
New 3 in 1 smoke detector
Reviewed: 02/15/2021 by Amy High
It came in about a week. Appears to be as advertised. I hope I never find out if it works. So far no nuisance alarms. But I haven't burnt any food. It's installed in the kitchen away from the range. I bought it because I had a chimney malfunction that produced smoke and alarms didn't go off but my dog barked.
Reviewed: 10/24/2020 by mike jones
Easy to install. Fair price. Great product.
Reviewed: 10/19/2020 by William Spicer
I am impressed with the ten year battery. I had a Co2 Universal before however, it did not have the ten year battery. The new one did not have the screw spacing the same. So I needed to drill a new hole in the aluminum of my Air Stream trailer.
A unique product
Reviewed: 09/08/2020 by Bruce Kile
While it is too early to provide long term performance, the units were install with no problem. The units were powered up and tested sucessfully.
Ordered in time
Reviewed: 08/04/2020 by George Podolsky
Old smoke and carbon monoxide alarms went bad the day before I received my order. Was able to replace two alarms with one. It was well worth the price. I recommend this alarm to anyone looking to replace or install a new.
Reviewed: 07/02/2020 by Clarence Nash
Excellent just what I wanted now I don't need to worry about batteries.
Reviewed: 06/22/2020 by Philip Austin
Should have indicator mark on base so unit can be aligned with walls, hallways, etc
Reviewed: 05/29/2020 by Elena Yazgur
Excelent service, quick delivery, very good product.
Reviewed: 05/23/2020 by Neal Plotnik
easy to install, easy returns
Reviewed: 05/06/2020 by David Marco
Product worked well...delivery was quick, installation went well. Easy online ordering
Reviewed: 09/24/2019 by Nathaniel Johnson
Convenient triple alarm, easy to put up. Nice to have the 10 year battery, just set it and forget it.
Reviewed: 09/09/2019 by Melinda Crawley
Same as above. Placed one on first floor and the other on the second floor. Seemed a reasonable prices for the quality.
Reviewed: 01/22/2019 by Andrew Schrom
Easy to install. Received on time.
Reviewed: 06/12/2018 by Paul Pappas
I purchased 3 smoke/fire and carbon monoxide detectors.Easy to install. All three units are working fine. Good quality products. Will buy from universal security instruments again
Reviewed: 05/19/2018 by Zach Hoskins
We have these detectors all throughout our home and we feel safe with them.
Reviewed: 04/20/2018 by Rod Nelson
easy to install,
Reviewed: 03/09/2018 by John Quingert
great combination 3-1 alarm + the 10 year battery... Excellent pricing & product, easy to install
Reviewed: 02/23/2018 by don lafferty
Easy to install
Reviewed: 02/08/2018 by Richard Mankel
I ordered the USI Three In One Smoke Detector from Universal Security Instruments, Inc. and am very happy with it. It was a good price. The Shipping was quick and the package was undamaged. I will order from this Company again and will highly recommend them to my friends.
Reviewed: 01/03/2018 by Richard Gorecki
Installed in the basement as they had no protection down there. Very easy to install. Again I hope the battery will last the 10 years.
Reviewed: 08/22/2017 by Al Tetreault II
Easy to install and battery operated
The Right Solution
Reviewed: 07/07/2017 by Robert VanEe
I've had these alarms installed for 3 to 4 months so far and am totally satisfied. I searched for some time for combined smoke/fire/CO detection and this was one of the most attractive and manageable options. Easy to install and the 10 year life is just what I needed to set it and forget it. I have one on each floor as well as one adjoining the kitchen. I knew the kitchen was a stress case for false alarms, but have been pleased to have none. The one alarm we got on that one was definitely in a smoke filled room.
installed in home
Reviewed: 06/26/2017 by Leila Nicolle
Items were installed in home day after received and no issues thus far... hopefully will perform as advertised and batteries will last full 10 years...
Fast and Easy
Reviewed: 01/06/2017 by Julie Johnston
The free delivery was super fast and the units were very ez to install.
Reviewed: 10/27/2016 by Caterina A. Viscomi
Easy installation. Did the whole house in minutes.
Reviewed: 05/30/2016 by Roy Greengrass
No issues on installing and no false alarms, Seems a good value for a tri function alarm and complies with California codes.
Sealed Battery Smoke Detector
Reviewed: 04/12/2016 by Daniel White
Purchased the 3-1 detector for our 50 boat. Like the fact that I wont have to change the battery. So far, it is working great.
Reviewed: 04/07/2016 by ben schlesinger
We are very happy with this product and are re-ordering additional units.
Reviewed: 04/02/2016 by Jeffrey Dezelan
Shipment received timely. Detectors easily installed. Everything as advertised.
Reviewed: 03/08/2016 by John Robinson
Simple to order, alarms came in timely fashion, price was reasonable. What more could you want?
Reviewed: 02/10/2016 by Gary Lee
This 3-in-1 alarm smoke, fire, CO seems to be as advertised. I like that it has a smart sensor to detect both smoke and fire. I also like that the unit is sealed and has a 10-year service life - no changing of batteries required.