USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Tamper-Proof Sealed Battery (MIC3510SB)

- Reviewed: 10/13/2021 by John K

2 Units Installed

Replaces 2 old AC powered units and the 2 purchased units. Units installed using the same screw holes from the replaced units minimal installation time & effort required.

- Reviewed: 09/02/2021 by bob m

3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm

Great all in one product to keep family safe and secure

- Reviewed: 08/31/2021 by JAMES W

proven smoke alarms

Consumer Report gave this model as the #1 rating among some other well known brands . This is good enough for me to decide.

- Reviewed: 08/27/2021 by Chuck L

Bought two to replace old expired detectors

Highly rated ... easily installed ... provides more protection than those replaced. Old ones did not detect carbon dioxide. Sleeping better already! Easy purchase ... fast delivery.

- Reviewed: 07/11/2021 by Anne L

best choice on the market

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

Seem fine

Easy installation. For anything more, ask me again in 10 years.

- Reviewed: 06/17/2021 by Erin L

Top rated by Consumer Reports

I was planning to purchased hardwired units w battery back up but Consumer Reports gave these great ratings.

- Reviewed: 06/15/2021 by Scott H

First time user

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.

- Reviewed: 06/12/2021 by Beth N

Peace of mind

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.

- Reviewed: 06/08/2021 by Gerald C

USI 3 in 1 Smoke, Fire, CO Alarm

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!

- Reviewed: 06/08/2021 by linen p

great combo smoke/CO alarm!

these were easy to install and so far no false alarms....will definitely purchase again!

- Reviewed: 05/31/2021 by Dan F

Simple and effective

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

Safety First

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.

- Reviewed: 05/28/2021 by Kirk B

Best Combination Smoke and Carbon Monoxide Alarm

I bought 3 because of the reviews online from Consumer Reports

- Reviewed: 04/30/2021 by Linda T

Received and installed

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.

- Reviewed: 02/17/2021 by Lynn Wilson

wonderful and no more batteries!

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.

- Reviewed: 02/15/2021 by Amy High

New 3 in 1 smoke detector

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

alarm

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.

- Reviewed: 09/08/2020 by Bruce Kile

A unique product

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.

- Reviewed: 08/04/2020 by George Podolsky

Ordered in time

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

Mr

Should have indicator mark on base so unit can be aligned with walls, hallways, etc

- Reviewed: 05/29/2020 by Elena Yazgur

Service review

Excelent service, quick delivery, very good product.

- Reviewed: 05/23/2020 by Neal Plotnik

Great Product

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

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

Great product

Easy to install. Received on time.

- Reviewed: 06/12/2018 by Paul Pappas

Smoke detectors

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

Great Detector!

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

Smoke Detector

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

glens house

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

- Reviewed: 07/07/2017 by Robert VanEe

The Right Solution

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.

- Reviewed: 06/26/2017 by Leila Nicolle

installed in home

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...

- Reviewed: 01/06/2017 by Julie Johnston

Fast and Easy

The free delivery was super fast and the units were very ez to install.

- Reviewed: 10/27/2016 by Caterina A.  Viscomi

Easy.

Easy installation. Did the whole house in minutes.

- Reviewed: 05/30/2016 by Roy Greengrass

functions great

No issues on installing and no false alarms, Seems a good value for a tri function alarm and complies with California codes.

- Reviewed: 04/12/2016 by Daniel White

Sealed Battery Smoke Detector

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

Detectors

Shipment received timely. Detectors easily installed. Everything as advertised.

- Reviewed: 03/08/2016 by John Robinson

Good Experience

Simple to order, alarms came in timely fashion, price was reasonable. What more could you want?

- Reviewed: 02/10/2016 by Gary Lee

Seems Good

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.