Customer Reviews For The First Alert Dual Sensor 10-Year Battery Smoke and Fire Alarm - SA3210

Overall Rating

56 Reviews
54 customers recommend this product
Eric W
March 10, 2023
Verified Purchase
Excellent service, great price

Recently replaced our First Alert 10 year ionization smoke detectors, model 0827B after a solid 10 years of service 6 detectors in all and upgraded to these, which detect both ionization and photoelectric fire/smoke in hopes we will never need the alert.

Barry Friedman
September 12, 2022
Verified Purchase
First Alert Dual Sensor Photoelectric/Ionization Smoke and Fire Alarm with 10-Year Sealed Battery

My three First Alert 10-year smoke alarms Model SA340 that I placed in three rooms of my house in 2012 were due for replacement. I had been _very_ happy with them. So, of course, I was going to replace them with new First Alert alarms, and I decided to upgrade to these FA Dual Sensor Photoelectric/Ionization Smoke and Fire Alarms with 10-Year Sealed Batteries Model SA3210. The First Alert Store offered a three-pack--perfect for me! I was delighted to discover that these SA3210 alarms fit on the same mounting brackets as the SA340 alarms, so I didn't have to drill new holes in the walls! The new smoke and fire alarms work right out of the box. This was an excellent transaction, and I am a very satisfied customer.

Thomas W
July 3, 2022
Verified Purchase
Hard to find Recommended Smoke and Fire Alarm

I have had 7 of the First Alert Dual Sensor alarms on and off in my home for about 37 years now. At times I could not get this model, and had to resort to those by another manufacturer. I have owned different SA3210 models as they progressed from 9 volt, to AA, to sealed batteries. It is the most reliable fire in my opinion. It only goes off when we are cooking a smoky dinner or are near an open bathroom door with a lot of moisture. The big box stores have not been carrying this model, why I do not know. Hopefully I will continue to get it online, especially now that NY State requires sealed batteries. Thank you for making such a quality and reliable product!

Kimberly W
September 22, 2021
Verified Purchase
No more false alarms!!!!!

I purchased this detector because the one I had kept going off. At first I replaced the battery, that wasn't the problem. It was the humidity. This one is perfect.

Richard G
September 14, 2021
Verified Purchase
Replacement for 9 volt battery units

replacing the 9 volt battery version after 10 years of service. Purchased on website - easy and quick. Shipping free and quick Instillation instructions were clear and the installation process were smoothly. Base of this unit match size and anchor hold of the old unit - so no marks on the wall.

Ralph R
May 20, 2021
Verified Purchase
good purchase

This is a very useful item because it lasts for 10 years without having to change the battery. Also it has two methods of detecting smoke and fire.

John Kriska
December 14, 2020
Verified Purchase

I ordered a total of four detectors. Of the four, so far, two have activated for no apparent reason. If they continue, I will Return them for a refund.

Barry Sperman
November 21, 2020
Verified Purchase
dual sensor SA3210

good looking, easy to install, and gives us a safe feeling knowing smoldering or flaming fires are going to be detected.

Stephen K Sozansky
November 16, 2020
Verified Purchase
November 2020

Great product. Great service. Great price.

Cathy Popp
November 13, 2020
Verified Purchase
Detector Upgrade

I ordered 6 smoke detectors to install as required by our local fire code. I selected these detectors since they covered both smoldering and fast fires with ionic and photoelectric sensors. I ordered the carbon monoxide detectors EWill separately. The installation was easy and the directions clear. The real test is how they work! The hall detector did appropriately respond to some mild cooking smoke. No false alarms to date after 1 month. Will test regularly to assure they respond and batteries remain good.

Anthony Dun
September 22, 2020
Verified Purchase
First Alert Dual Sensor

Product arrived fairly quickly and in good condition. Installation was straight forward and simple. Very happy with the whole process. Happy to have unit installed since it was highly rated by Consumer Reports.

Stu Crockett
September 4, 2020
Verified Purchase
So far so good

These replaced two competitive photoelectric units that gave me six false alarms in four months. So far, no false alarms with First Alert

July 13, 2020
Verified Purchase


Richard VonOtten
June 12, 2020
Verified Purchase


Todd Whitford
April 13, 2020
Verified Purchase

Purchased 6 detectors. 5 of 6 installed seamlessly, but the 6th was defective DOA. Fortunately, First Alert sent a replacement quickly so all 6 are now installed and working as expected.

Irvin Yoshino
April 1, 2020
Verified Purchase
First Experience

I've been trying to purchase a dual sensor smoke detector with a lithium battery. I bought a First Alert Ionization sensor alarm from Costco, it started to chirp false alarms after one year. So far so good, it's only been two months .

February 26, 2020
Verified Purchase
A Must Buy Item

I purchased this unit because it has the sealed 10 year battery, and can detect flames as well as smoke. This is a must buy for peace of mind and ease of maintenance.

Nancy Priddy
February 17, 2020
Verified Purchase
Happy Customer

I ordered 6 of these alarms to update the safety of my home. When they arrived in just a couple days, I was quite impressed! Aside from endangering my life on a stepladder, installation was a breeze. The hardest part was lugging the step ladder around. And figuring out some of the instructions about alignment, which could have been written a little better. But common sense prevailed. I got the job done. I'm a happy customer.

Alan Aqualino
December 16, 2019
Verified Purchase
Has met all expectations

Bought this model to replace 10yr old models which lacked sealed battery. When recd, determined that all the ones I'd purchased tested okay. For me, this models universal mounts indeed worked fine with pre-existing screw holes from multiple vendors/models. Although my old models sometimes gave false positives for bath mist & kitchen fumes, these new models have so far been very well-behaved. Have not yet fired up the woodstove for winter... Hope the sealed battery indeed lasts 10 yrs!

Keith Buis
December 6, 2019
Verified Purchase
Exactly the detector I was looking for

I was looking for duel senor with 10 yr battery and this product is what I was Looking for.

Why Is My Smoke Alarm Beeping?

Smoke alarms can beep for to the following reasons:

  • Low Battery: This is the most common cause. Most smoke detectors use a chirping sound (usually a single beep every 30-60 seconds) to warn you that the batteries are running low and need to be replaced. Don't wait until the alarm is silent - replace the batteries right away to ensure your smoke alarm continues to function properly.
  • End of Life: Smoke alarms don't last forever. If your smoke detector is beeping constantly or in a different pattern than the low battery chirp, it may be nearing the end of its intended lifespan and should be replaced altogether.

Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery

The First Alert SA3210 10-Year Battery Dual Sensor Alarm provides early warning of both flaming and smoldering fires. Additionally, its intelligent sensing technology is designed to cut down on nuisance alarms from cooking smoke or other common false-alarm triggers. A single button both silences and tests the smoke detector for simple operation. The built-in 10-year lithium metal battery provides continuous power, with no need to ever worry about changing the battery over the lifetime of the smoke detector, and it can be easily installed anywhere without wires.

Dual Sensors Detect Different Types of Fires

This First Alert Smoke and Fire Alarm comes equipped with two different sensors to offer the earliest possible warning of a fire. The ionization sensor detects flaming fires, such as grease fires or wastebasket fires, while the photoelectric sensor detects smoldering fires, such as when a lit cigarette ignites clothing or upholstery. Both sensors work together to provide complete smoke and fire detection.

Intelligent Sensing Technology Minimizes False Alarms

People sometimes disable a fire detector when it goes off due to cooking smoke or steam, even though in doing so they endanger themselves and their loved ones. Intelligent Sensing Technology in the First Alert Dual-Sensor Smoke and Fire Alarm is designed to distinguish between real fires and nuisances, reducing false alarms significantly so there is never a need to disable the alarm.

Ten Years of Smoke and Fire Protection

This smoke and fire alarm is powered by ten year sealed lithium batteries. The batteries will not have to be replaced during the span of the alarm's ten year operation. Dual sensing technology and a decade's worth of protection provides an elite defense in alerting others to the presence of smoke and fire in the home.

First Alert Photoelectric/Ionization Smoke and Fire Alarm SA3210

* Meets California, New York and New Jersey 10 Year Smoke Alarm Requirements

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