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

4.6 4.6 out of 5 stars 22,860 ratings

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SA320FF
Alarm

Purchase options and add-ons


About this item

  • 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)
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Customer ratings by feature

Easy to use
4.9 4.9
Light weight
4.8 4.8
Noise level
4.4 4.4
Easy to install
4.1 4.1

Frequently bought together

$22.49
Get it as soon as Tuesday, Mar 26
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$24.89
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$17.48
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First Alert SA320FF Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White , 1 Pack
FIRST ALERT First Alert SA320FF Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White , 1 Pack
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Price$22.49$18.95-8% $48.99
Typical:$52.99
$39.99-14% $50.72
Typical:$58.78
-10% $19.78
Typical:$21.98
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Easy to install
4.1
4.6
4.6
4.4
4.6
4.5
Value for money
3.6
4.3
4.1
4.2
4.5
4.1
Battery life
3.7
4.4
5.0
4.6
4.3
Sold By
Amazon.com
X-Sense US
Guangzhoujinxuanshangmaoyouxiangongsi
X-Sense US
Amazon.com
Amazon.com
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
sensor type
Photoelectric
Photoelectric
Carbon Monoxide
electrochemical,photoelectric
Ionization
Photoelectric
style
SA320FF
Standalone Model SD2L0AX
Combination Smoke and Carbon Monoxide Detector Battery Operated,, bedroom and travel.
Standalone Model
9120B
Hardwired
alarm
Audible
Audible
Audible
Audible
Audible
Audible

From the manufacturer

First Alert
Super Prepared Family

Smoke

Carbon Monoxide

Extinguishers

Escape Ladders

Smoke Alarms

Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.

Carbon Monoxide Alarms

Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.

Fire Extinguishers

Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur.

Escape Ladders

Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.

Recommended Placement

Product guides and documents

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Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here [PDF ]

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


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Product 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.

Important information

Bulb Voltage

0 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
22,860 global ratings

Customers say

Customers like the ease of installation and value of the gas smoke fire alarm. For example, they mention it's easy to mount and good value for the money. Opinions are mixed on quality and false alarms.

AI-generated from the text of customer reviews

770 customers mention671 positive99 negative

Customers find the installation process of the gas smoke fire alarm to be easy. They mention that it's easy to mount, and check the battery.

"Installs easily when replacing the AC powered units I was replacing...." Read more

"Everything about this product is easy. Easy to use and install and reliable." Read more

"...They fit the brackets from my old First Alert alarms so no "install" was required. Just unscrewed the old ones and screwed on the new...." Read more

"Easy to install, and did exactly what I needed to do" Read more

592 customers mention479 positive113 negative

Customers like the value of the gas smoke fire alarm. They mention that it's a terrific smoke detector for the price, a good investment, and a great buy.

"Perfect, good value for the money" Read more

"...Overall, hey, it's cheap and does the job but it's a bit annoying." Read more

"...Pretty good value. I got it for around $18." Read more

"...If you need a smoke alarm at a good value, and don't mind replacing it a few years down the line, this is the product for you...." Read more

1,326 customers mention775 positive551 negative

Customers are mixed about the quality of the gas smoke fire alarm. Some mention that it works well, while others say that it malfunctioned.

"...and the slide out batter drawer is convenient...." Read more

"I purchased 2 for $15 and one stopped working after 3 years. I changed the battery, but light still red...." Read more

"Everything about this product is easy. Easy to use and install and reliable." Read more

"...Unless I'm a total idiot, the battery cage is awkward to open and doesn't fully come out...." Read more

532 customers mention202 positive330 negative

Customers are mixed about the false alarm of the gas smoke fire alarm. Some mention that the alarm works on this smoke detector, but the light on it stopped working right after they purchased it. They like the idea that they use both technologies to detect smoke and fire (ionization and photoelectric), and that it's a good, basic smoke detector. However, others say that the unit started beeping while they were on the way out the door, and that the batteries failed to emit a single chirp.

"Very loud and extremely sensitive. Go off if I take something from the oven having burnt food on it...." Read more

"...They were very well packaged. The alarms are so great. They will wake you up. I know." Read more

"...After about a year after I installed it, the alarm began to trigger when I was in the shower. I can't tell you how annoying that was...." Read more

"It chirps when too much steam is present so I have to take it down and hide it when making soup, even though it's in the other room and the oven fan..." Read more

Good option to add dual sensor battery powered (ten year sealed) unit to single sensor wired alarms
4 Stars
Good option to add dual sensor battery powered (ten year sealed) unit to single sensor wired alarms
I liked the ability to add a dual sensor alarm to augment our hard-wired single sensor alarms. I replaced an older First Alert battery powered alarm and was able to use the same mounting screws, although the alarm itself isn't quite vertical. On the other hand, there was an issue with placing the alarm on the mounting ring. I attached the alarm to the ring before mounting the ring on the wall, (which activated the battery) and then found I couldn't remove the alarm from the ring when I rotated the alarm count-clockwise. What I found was that the "activation key" (see X in the photo) protruded enough to block the alarm from rotating completely to the removal position. I used a screwdriver to push the "key" inwards enough to allow the alarm to rotate to the removal position. The key in fact pushes the batter switch to the "on" position (see Y in the photo). I ended up putting enough pressure on the activation key to the point where it no longer affected placing or removing the alarm. I recall seeing another review that mentioned the same problem. Perhaps most of the time the activation key switch doesn't protrude into the mounting ring guide upon initializing the battery, but if it does, this was my workaround. YMMV.
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Top reviews from the United States

Reviewed in the United States on February 5, 2024
Style: SA320FFPattern Name: AlarmVerified Purchase
3 people found this helpful
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Reviewed in the United States on February 14, 2024
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Reviewed in the United States on March 8, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
One person found this helpful
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Reviewed in the United States on February 25, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
Reviewed in the United States on February 6, 2024
Style: SA320FFPattern Name: AlarmVerified Purchase
6 people found this helpful
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Reviewed in the United States on March 5, 2024
Style: SA320FFPattern Name: AlarmVerified Purchase
Reviewed in the United States on February 7, 2024
Style: SA3210Pattern Name: Fire and SmokeVerified Purchase
Reviewed in the United States on March 9, 2024
Style: SA320FFPattern Name: AlarmVerified Purchase

Top reviews from other countries

Al
4.0 out of 5 stars Not so good ,,,,
Reviewed in Canada on January 2, 2021
Style: SA303CN3Pattern Name: AlarmVerified Purchase