Model # SA320CN

Internet #202788788

First Alert Battery Operated Dual Sensor Photoelectric and Ionization Smoke Alarm
0029054007384

First Alert

Battery Operated Dual Sensor Photoelectric and Ionization Smoke Alarm

  • Utilizes both ionization and photoelectric smoke sensors
  • EZ access battery door
  • Batteries Included
$23.06 /box

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Product Overview

Dual sensor technology is the preferred choice of fire service professionals for its ability to detect both flaming and smoldering fires. Ionization technology smoke detectors are generally more sensitive than photoelectric technology smoke detectors at sensing small particles, which tend to be produced in greater amounts by hot, flaming fires that are consuming combustible materials rapidly and may spread quickly. Photoelectric smoke detector technology is generally more sensitive than ionization smoke detector technology at sensing large smoke particles, which tend to be produced in greater amounts by smoldering fires, which may smolder for hours before bursting into flame. With this fire alarm, you no longer need to choose just one technology. This unit is powered by 2-AA batteries (included), and features intelligent sensing technology which reduces non-emergency or nuisance alarms. This product is also backed by a 10-year limited warranty.

  • 2-smoke sensing chambers, ionization and photoelectric for maximum fire detection
  • Intelligent sensing technology reduces non-emergency or nuisance alarms
  • Single button silence/test mutes unwanted alarms
  • Operates on 2-AA batteries (included)
  • 10-year limited warranty

Info & Guides

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Specifications

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Warranty / Certifications

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Customer Questions & Answers

Can I replace hard wired smoke detectors with battery operated and just tuck the old wiring up above.

Asked by: JimJ
Per the literature, no. CAUTION states..."Do not install this unit over an electrical junction box. Only AC powered units are intended for installation over junction boxes."
Answered by: Bill
Date published: 2016-09-13

Must the unit be replaced in 10 years?

The manual states the unit must be replaced 10 years after the date of purchase and to write the date of purchase in the space provided on the back.. I understood it should be 10 years from the "date of manufacture" not the date of purchase. Which is correct?
Asked by: campzama

How long do the batteries last

I've never had smoke detector with AA batteries, always with 9 volt. So I'm interested to know how long the batteries will last under "normal" (no alarms) use?
Asked by: Rocky
Have only had the smoke alarm in use for about a month. No battery replacement needed so far. When battery replacement is needed, the two AA batteries are very easy to replace.
Answered by: Andy
Date published: 2016-12-30

I'm finding that some alarms don't audibly notify you when the batteries are dying or dead. Does this model?

Asked by: question
Yes it continuously beeps every 10 -15 seconds
Answered by: Bert
Date published: 2016-11-10

What is the manufacture date? I want to buy new products. I just returned 2 units to Amazon becau...

What is the manufacture date? I want to buy new products. I just returned 2 units to Amazon because they are dated to 2013 Jan.
Asked by: Larry

How to change batteries without breaking ?

Asked by: Dumbie
This particular unit has a slide out battery compartment that allows replacement without any disassembly. Make sure your battery terminal styles align with the receiver terminals when inserting. Many older models require the removal of the cover to access the battery. Simply pry down gently on the cover and it will pop off. Disengage the battery from the posts and reinsert new in same configuration. Be sure to maintain proper orientation of the cover for proper alignment during reassembly.
Answered by: Bill
Date published: 2016-09-13

Do both sensors, photoelectric and the ionization, have to trip in order for the alarm to go off?

Asked by: MrsG
No, that is the purpose of having two methods of detection. Quicker detection of flaming or smoldering fires.
Answered by: Bill
Date published: 2017-02-14

Is this alarm interconnected

I need all detectors to sound alarm whenever any other detector alarms
Asked by: JKJ
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Customer Reviews

Battery Operated Dual Sensor Photoelectric and Ionization Smoke Alarm is rated 4.7 out of 5 by 66.
Rated 5 out of 5 by from Time to replace old units Best rated battery powered model, providing two methods of smoke detection.
Date published: 2016-09-13
Rated 5 out of 5 by from Installation of alarms was very easy. The documentation was written very well. The price for this... Installation of alarms was very easy. The documentation was written very well. The price for this important product is also very good. I would recommend using the brand and model.
Date published: 2016-10-25
Rated 4 out of 5 by from Great value Very good product for the money ; have had these previously and they last several years.
Date published: 2016-08-28
Rated 5 out of 5 by from Easy to install and easy access to the battery. Easy to install and easy access to the battery.
Date published: 2016-10-25
Rated 4 out of 5 by from This product needs to be in stores As a retired firefighter and home fire safety educator, I am dismayed at the lack of quality fire/smoke detection products carried in-store. This particular unit is a dual sensor, meaning it can detect smoke/fire in two different methods, thereby giving a homeowner a greater level of security. Nothing beats an overall fire safety plan, but fire/smoke detector units like this are a big key in that plan. As for the detector itself, I like the fact that it uses AA batteries and is very easy to install. If you haven't replaced the fire/smoke detectors in your home within the last ten years, you NEED TO DO SO! Technology changes and the newer models are much more efficient than older ones. Remember, the life you save may be yours or your loved ones!
Date published: 2013-07-09
Rated 4 out of 5 by from Purchased this unit because I wanted a dual function ionization and photoelectric detector in a... Purchased this unit because I wanted a dual function ionization and photoelectric detector in a room containing a wood stove. Unit was east to install but I needed to create a fair amount of smoke before it sounded. Green LED indicator light very tiny and difficult to see. Hopefully it will function properly in the future.
Date published: 2016-12-06
Rated 3 out of 5 by from Not quite sure what to think of this item. The price was reasonable but the other day, it went o... Not quite sure what to think of this item. The price was reasonable but the other day, it went off for no reason. And then a blinking red light continue to blink until I got up on a ladder and turned it off. So, right now, I'm up in the air on this one.
Date published: 2016-11-08
Rated 5 out of 5 by from Nice Easy to install even without reading the very small print instruction. No false alarms yet after install 2 months ago.
Date published: 2016-08-02
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