Customer Reviews For The 10 Year Battery Smoke, Fire and Carbon Monoxide Alarm, Tamper-Proof

Overall Rating

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95 Reviews
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95 customers recommend this product

Product Reviews

Rosalie P
July 22, 2025
Verified Purchase
Very dependable

I chose this company for all my fire, smoke and CO alarm. It's very sensitive, very dependable and easy to install.

VINCENT M
November 29, 2024
Verified Purchase
great product

This product was a replacement for our previous 4 in 1 ISI product. Very happy with my interactions with the company.

William S
July 30, 2024
Verified Purchase
Easy to install and good for 10yrs

Great replacement for my existing smoke / carbon dioxide detectors. Best part is it will last 10 years.

Subramanyam S
July 22, 2024
Verified Purchase
Three in one 10 year battery smart alarm

The product arrived promptly in excellent condition. It was easy to fix. Previously, I had wired three in one 10 year battery alarm which will show a red and green light. But the current one does not have that feature. The new one blinks red once every three or four minutes. The previous one blinks every two minutes. It will be better if the new one had the same green and red light so that we know the alarm is alive. But the new one works well. I know it is alive by looking at its regular blinks.

Mike J
January 25, 2024
Verified Purchase
Excellent Smoke and CO Alarm

I purchased two of these alarms for my new home. This product detects both fast burning and smoldering fires as well as CO. Product was delivered quickly and was easy to install.

Patrick R
December 6, 2023
Verified Purchase
Quick and prompt service

Very easy to deal with your company

Ken E
May 29, 2023
Verified Purchase
3 in 1 Alarm

So far so good. They were very easy to install. Thank you for fast delivery!

Saul S
April 25, 2023
Verified Purchase
best price

check price all over -especially amazon and you were $12bless expensive per item -so I ordered 2 to get free shipping.

Dennis F
April 13, 2023
Verified Purchase
3-in-1 Smoke, Fire & CO Smart Alarm

As a retired firefighter I was happy to find this product in a review from Consumer Reports. These units cover the major concerns of every home owner. And finding that they are less expensive from the manufacturer than from Amazon was an extra plus. I received them in a timely manner.

Harsh I
January 12, 2023
Verified Purchase
Smoke alarm

Perfect

LM
October 29, 2022
Verified Purchase
So far so good

Easy to install. Pull tab to activate is convenient. Purchased because this is one of the few 3 in 1 alarms available photoelectric for smoldering fires, ionization for flaming fires, and carbon monoxide, and it was recommended by Consumer Reports.

Michael E
October 27, 2022
Verified Purchase
3 in 1 replacement

We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍

Michael E
October 26, 2022
Verified Purchase
3 in 1 replacement

We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍

Michael E
October 26, 2022
Verified Purchase
3 in 1 replacement

We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍

Andrea
October 17, 2022
Verified Purchase
Just what I needed!

I was looking for a combo smoke/fire/CO alarm with 10 year sealed battery and found this one on a “best” list. Bought it here as the 6 pack was convenient and reasonably priced. Easy to install.

Melanie R
September 26, 2022
Verified Purchase
3 USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm

Love your product. Easy to install and long lasting. Great.

Stephanie D
September 11, 2022
Verified Purchase
Highly satisfied customer

I own an 8ncome property having approximately 20 smoke-carbon units. Done are hard-wired , others not. I intend to continue replacing defunct units with the USI product line. I'm pleased with the value, product line and customer service.

Corey F
August 15, 2022
Verified Purchase
So far so good

Easy to install. No issues to date. The unit tested correctly for both Smoke and Co2

Brenda H
May 19, 2022
Verified Purchase
Great

Purchase, shipment, arrival=everything was great

Daniel E
May 5, 2022
Verified Purchase
Works fine easy to install

Instructions were easy, no battery changing is nice, and install was relatively easy. I'll probably be buying a second one.

Product FAQs

HOW ARE BATTERY OPERATED SMOKE ALARMS DIFFERENT FROM HARDWIRED ALARMS?

Battery-operated alarms are completely self-contained, powered by an internal battery, and require no connection to your home's electrical system. This makes them easy to install and ideal for any location. In contrast, hardwired alarms are wired into your home's power supply and often include a battery backup for power outages.

HOW DO I INSTALL A BATTERY OPERATED SMOKE ALARM OR CARBON MONOXIDE DETECTOR?

Installation is a simple DIY project. Most models come with a mounting bracket and screws. After marking the location on the wall or ceiling, you can simply screw the bracket in place and then twist the alarm onto the bracket. For more information and installation instructions, please follow the instructions that were included with your specific model.

HOW OFTEN SHOULD I TEST MY SMOKE ALARM OR CARBON MONOXIDE DETECTOR?

You should test all of your smoke alarms and carbon monoxide detectors at least once a month. This is as simple as pressing and holding the "test" button on the unit until it sounds. This ensures the alarm's sounder is working properly.

WHY SHOULD I CHOOSE A 10 YEAR BATTERY ALARM?

A 10-year sealed battery alarm offers a decade of continuous protection without the need for battery replacements. This eliminates the risk of an alarm failing due to a dead or missing battery, saves you from the hassle of annual battery changes, and prevents the annoying low-battery chirps that often happen in the middle of the night. It's a "set it and forget it" solution for a full decade.

WHEN SHOULD I REPLACE MY BATTERY OPERATED ALARM?

Fire safety experts, including the NFPA, recommend replacing smoke alarms every 10 years. This is because the internal sensors can become less sensitive over time due to dust, dirt, and age. For alarms with a 10-year sealed battery, the replacement is straightforward, as the alarm will sound an end-of-life warning when it's time to be replaced.

MIC3510SB Video Guide

Watch this helpful video to learn more about the USI 10 Year Battery Smoke Alarm and Carbon Monoxide Smart Detector - MIC3510SB.

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