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First Alert SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm

4.2 out of 5 stars 786 customer reviews
| 52 answered questions

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  • Utilizes both ionization and photoelectric smoke sensors for optimal performance
  • Intelligent sensing technology reduces non-emergency or nuisance alarms
  • Operates on 2 AA batteries (included)
  • Optimized sensor performance for the most nuisance-resistant dual sensor alarm on the market
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Frequently Bought Together

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Product Description

Product Description

First Alert SA320CN Dual Sensor Smoke Alarm; Utilizes Ionization & Photoelectric Smoke Sensors; Intelligent Sensing Technology Reduces Non-emergency Or Nuisance Alarms; 10-Year Limited Warranty. When alarm is in “normal operation”, there is a flashing Green LED once a minute and there is no audible alarm.

Amazon.com

No one wants to think about a fire in their home, but being prepared and recognizing signs of danger early can help keep you and your family alive and safe. The First Alert SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm is equipped to detect smoke particles caused by both flaming and smoldering fires.


The First Alert Double Sensor Smoke and Fire Alarm:
  • Detects both flaming and smoldering fires with dual sensors.
  • Emits a loud 85 dB alarm for ample warning.
  • Minimizes false alarms by detecting differences between real emergencies and non-threatening conditions.


Dual Sensor Technology For Maximum Protection
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.

Loud Alarm and Reliable Construction for Peace of Mind
The loud, 85 dB alarm gets your attention quickly, so you can get out quickly or contain a minor fire before it spreads. Plus the smart dual sensor helps the detector recognize the difference between non-threatening conditions and real emergencies, so false alarms are minimized.

This smoke detector meets the UL 217 standard for dual-sensor home smoke detectors, which means that it has passed tough quality-assurance tests and can be depended on to offer reliable protection.

Mute and Easy Battery Access for Safety and Convenience
The mute button can be used to test the alarm function, helping you ensure that your home and family are always protected.

This smoke detector is powered by two standard AA batteries (included). And, because a smoke detector is only effective if it is properly maintained, you'll appreciate that the EZ access battery door means there's no need to remove the alarm from your ceiling when it's time to change the battery.

This smoke detector's neutral, white finish blends in with your décor, and the unit measures just 5.7 x 5.7 x 2.8 inches. It is backed by a limited 10 year warranty.

Enhanced Performance
With optimized sensor performance, this smoke detector is the most nuisance-resistant dual sensor alarm on the market.

About First Alert
Organized in 1958 and recognized as a leading manufacturer of smoke alarms, carbon monoxide detectors, and fire extinguishers, First Alert designs and creates safety products that preserve and protect the things that are the most import to you, from your children and family to your home and the priceless memories stored inside.

What's in the Box
First Alert SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm and 2 AA batteries.



Place fire alarms on every level of your home.


Product Information

Technical Details

Part Number SA320CN
Item Weight 11.2 ounces
Product Dimensions 5.7 x 5.7 x 2.8 inches
Item model number SA320CN
Size 1 Each
Color iphone
Style Fire Alarm
Power Source battery-powered
Item Package Quantity 1
Batteries Included? Yes
Batteries Required? Yes
Warranty Description 10-Year Limited Warranty
Assembled Diameter 5.7 inches

Technical Specification

Manual [PDF ]

Additional Information

ASIN B004TSK9TG
Customer Reviews
4.2 out of 5 stars 786 customer reviews

4.2 out of 5 stars
Best Sellers Rank #4,359 in Home Improvements (See top 100)
#23 in Home Improvement > Safety & Security > Fire Safety > Smoke Detectors & Fire Alarms
#60 in Home Improvement > Safety & Security > Household Sensors & Alarms
Shipping Weight 11.2 ounces (View shipping rates and policies)
Domestic Shipping This item is available for shipping in the U.S. except for California and to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available March 27, 2011

Warranty & Support

Product Warranty: For warranty information about this product, please click here

Customer Reviews

Top Customer Reviews

Verified Purchase
As a professsional firefighter/paramedic for nearly 13 years, I see a lot of fires. I do know that most detectors out there are NOT dual sensor....they are mostly only ionization detectors that detect flame. Remember it's usually not the fire that will kill you, it's the smoke and it's deadly component carbon monoxide that will end your life. Photoelectric detectors detect these smoke particles and alert you.......ionization types rarely do if it's a slow smoldering fire. If your sleeping, by the time the ionization sensors detect the actual flames, the smoke and the CO will most likely have already gotten to you and you will be dead. That's why it's so VERY VERY important to have a dual-sensor smoke detector. This item particular item IS a dual sensor that is designed to alert you to both smoldering low-flame fires and high intensity/ rapid flame fires. This detector will protect you 100% from fire related death/injury if used properly and placed correctly in your home. Remember to replace the battery every time you switch the clock during daylight savings time or any time the detector chirps. Always look for a photoelectric/ionization detector and buy one. Have one in your hallway, in the main living room at the very least and I always like to put one in each room because I am overly cautious. Also make sure to have a B-C extinguisher on hand near the kitchen to put out kitchen grease fires....the #1 cause of residential structure fires. Hopefully you can put a small one out, but if you discharge the entire extinguisher and the fire is not out......evacuate the house immediately and make sure you or someone called 911 prior to exiting your home. Stay safe !
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After my house filled with smoke and my 2 Kiddie smoke detectors did not alarm, I replaced them with this First Alert model. I had already installed a First Alert SA320CN in the basement when the Kiddie I had there unexpectedly fell on the floor and broke (never did figure out why.)

After the Kiddie alarms failed to work, I tested the First Alert in the basement by starting a smoky fire in a metal container. The First Alert alarmed as expected.

Since my experience with the Kiddie detectors, after installing them, I will test alarms in the future with actual fire & smoke. The little "test" button on the Kiddie detector always worked, but that didn't assure that it would work in an emergency.

Note: the SA320CN has replaced a prior model, SA302, which has been discontinued.
9 Comments 245 of 255 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
I read many of the reviews for this product. Many were good and many were poor. I took a chance. Bad Idea. This product arrived timely and it was a good price. I installed the item with the batteries that arrived with it. Within less than a couple of weeks it began to chirp. So I replaced the batteries. Less than a month later it began to chirp again. Replaced the batteries one more time and it began to chirp within a week or so. So I called the Mfg to let them know the problem I was having and they honored the warranty on the product. They shipped me another product. I installed it and it began to chirp within two weeks. I called the Mfg back and and told them about the problem I was having. They stated they would send me another unit along with a return label. This was on 1-7-13.... I am still waiting :(....... One other thing about this. The unit I originally recv was mfg in Sept 2012. I had informed the Mfg of this date and had thought it might have been a bad lot number. But the replacement unit they shipped me was also Mfg in Sept 2012. When I called back and asked for another warranty replacement I asked them not to send me one with a Sept 2012 Mfg date.... I am still waiting :(......
2 Comments 144 of 157 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
I replaced several battery operated smoke detectors with this model. They were easy to install and are working perfectly. I especially like the feature that will allow me to replace the batteries without removing the unit from the ceiling.
Comment 73 of 78 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
Bought from amazon in June 2012.
Came with brand new Energizer batteries and installed them.
Started Chirping in 1 month.
Replaced with brand new Duracell batteries.
Chirping in 1 month.
Replaced again with brand new Duracell batteries.
Chirping in 1 month.
Called BRK (First Alert) customer service. They said to replace only with Energizer batteries and call back if it chirps - huh?
Seems so strange. They are forcing me to buy Energizer batteries and also not willing to replace a defective product (what about the first set that came from Amazon? I told them it was Energizer, but she would not have it. Said I have to buy new ones and do it again).
Nowhere is it advertised that only Energizer batteries are to be used.
Very suspicious of so many positive amazon reviews.
Bad product, Poor customer service.
18 Comments 177 of 200 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
I purchased four of these at once to replace my four aging smoke alarms. I like these units because they are inexpensive, compact, easy to install, they have two methods of detecting fire or smoke, and they run on inexpensive, easy-to-replace AA batteries. (I have never liked 9-volt batteries.) If you need a good, well-rated unit in a stand-alone smoke & fire alarm, this is the one for you. If you need a networked unit, I believe First Alert produces such a unit, but that feature will cost you more. The SA320CN is highly recommended.
Comment 116 of 131 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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