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First Alert

First Alert SA320FF Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White , 1 Pack

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Size: 1-Pack


Style: Standard Detection


Pattern Name: SA320FF


Features

  • Help keep your family safe with this battery operated smoke alarm; It requires no rewiring for installation and provides continuous monitoring even if there's a power failure
  • Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires
  • Single test/silence button lets you easily check alarm function and mute false alarms; Use Polaroid AA batteries for best results
  • Loud 85 decibel siren sounds to alert you to danger
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert brand trust survey in February 2018)

Description

While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires. This alarm makes use of both ionization and photoelectric sensors to offer the earliest possible warning regardless of the type of fire. Sometimes a fire can smolder for hours before erupting into flames. Photoelectric Sensing Technology is more sensitive than Ionization Sensing Technology at detecting these sorts of smoldering fires, like those caused by cigarettes burning in couches or bedding. Other fires erupt into flames quickly, like kitchen grease fires or fires fueled by paper burning in a wastebasket. Ionization Sensing Technology is generally more sensitive than Photoelectric Sensing Technology at detecting these sorts of flaming fires.

Brand: First Alert


Style: Standard Detection


Power Source: Battery Powered


Color: White


Product Dimensions: 2"D x 5"W x 5"H


Item Weight: 0.7 Pounds


Alarm: Audible


Sensor Type: Photoelectric


Global Trade Identification Number: 58


Number of Items: 1


Brand: ‎First Alert


Style: ‎Standard Detection


Power Source: ‎Battery Powered


Color: ‎White


Product Dimensions: ‎2"D x 5"W x 5"H


Item Weight: ‎0.7 Pounds


Alarm: ‎Audible


Sensor Type: ‎Photoelectric


Global Trade Identification Number: ‎58


Number of Items: ‎1


Manufacturer: ‎First Alert


UPC: ‎029054015358


Part Number: ‎SA320CN


Item Weight: ‎11.2 ounces


Country of Origin: ‎Mexico


Item model number: ‎SA320FF


Batteries: ‎2 AA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎1-Pack


Pattern: ‎SA320FF


Item Package Quantity: ‎1


Number Of Pieces: ‎1


Certification: ‎not_applicable


Included Components: ‎First Alert Sa320Cn Dual Sensor Battery-Powered Smoke And Fire Alarm, 2-Aa Batteries


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Zinc


Average Battery Life: ‎8760 Hours


Warranty Description: ‎10 Year Limited


Date First Available: December 8, 2012


Frequently asked questions

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This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews

    • House is safer with these detectors.
Size: 3-Pack Style: Precision Detection Pattern Name: SMI100
Saw a video on news of recent fire. Captured on Ring camera across the street. House burned within minutes! Bystanders ran in to save family. Fire trucks arrived in fifteen minutes, but damage was extensive. That was enough to convince us to put a detector in every single room. Worth every penny.
Reviewed in the United States on May 24, 2025 by Carolyn
    • The BEST Smoke Alarm I’ve Had
Size: 2-Pack Style: Precision Detection Pattern Name: SMI100
I just replaced my Kidde wired smoke detectors with these battery operated ones. Bought 2 to begin with, and just ordered 4 more for the rest of the house. Perfect fit! So easy to install. I just had to take off the old mount, install the new mounts, pull the battery tag, test and they are up and going. I have always went with Kidde, but have noticed over the years that some of their products aren’t as good as they used to be. The last batch of Kidde smoke alarms I bought on Amazon had a 2014 date, but I bought them in 2018. My now ex put them up. Not sure why he didn’t check the date. So I only got 7 years out of them. The First Alert smoke alarms are so easy to test. Just overall a good product. ... show more
Reviewed in the United States on April 8, 2025 by Interloper
    • Uses 9 volt (included ) and has easy access battery door.
Size: 2-Pack Style: Precision Detection Pattern Name: SMI100
This detector uses a 9 volt battery (included) and has an easy access door. You can change the battery with removing the detector. These were fresh manufacture date was 14 Feb 25. Excellent price when you order the 2 pack. It is recommended that you replace a smoke detector 10 years from the date of manufacture. I was a retired insurance agent so I would have access to loss data that the insurance industry keeps track of. 20 percent of all persons killed in a house fire did not have a working smoke detector in the home at the time of the fire. So be safe replace after 10 years and test your detectors monthly. ... show more
Reviewed in the United States on April 18, 2025 by Ed
    • Smaller than the original First Alert alarm.
Size: 1-Pack Style: Precision Detection Pattern Name: SMI100
Wish it would have fit the existing First Alert alarm, which was supposed to last 10 years but only lasted four. But it was no big deal to change the mount - it used the same screw holes.
Reviewed in the United States on May 28, 2025 by Amazon Customer
    • Unit died after 6 years, but great customer service/warranty, getting replaced
Size: 1-Pack Style: Standard Detection Pattern Name: SA3210FF
5 stars for customer service. Bought 4 of these a little over 6 years ago, one started giving the end-of-life alert. Called to see if the 10-year warranty covered it, it does, they're sending a new one, no hassle. As far as the unit itself - I haven't had a fire, so that's good. A few false alarms, but only when I'm generating smoke cooking, so understandable. ... show more
Reviewed in the United States on May 1, 2025 by desert_rnr
    • Definitely recommend
Review Image by Lisa Lisa
We got a new furnace recently. The gas kicked on and burned some of the residue off the furnace from when they installed it. It tripped this smoke detector even though there wasn't even any visible smoke. I thought the room would have to be filled with smoke for this to work but no. I definitely recommend this to anyone looking to buy a smoke detector. It is very sensitive! It will save your life! ... show more
Reviewed in the United States on April 28, 2025 by Lisa Lisa
    • Dual Safety, Reliable Alert
Size: 1-Pack Style: Standard Detection Pattern Name: SA320FF
Review Image by Mon Saad Mon Saad
Review Image by Mon Saad Mon Saad
Dual sensors for smoke & fire. Battery-powered, easy setup. Frustration-free packaging. Provides crucial early warning. Trusted First Alert brand.
Reviewed in the United States on May 27, 2025 by Mon Saad Mon Saad
    • Happy camper
Size: 2-Pack Style: Precision Detection Pattern Name: SMI100
I was surprised when I started looking for replacement smoke detectors that California requires only the new 10 yer smoke detectors. I was pleased that I was able to get these less expensive models shipped to California since the reviews on the 10 year models are not all that great.
Reviewed in the United States on April 27, 2025 by The Wandering Steeles

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