The First Alert Smoke Alarm with Smart Sensing Technology and Nuisance Resistance utilizes two differing technologies to achieve the maximum in reassurance. Capable of quickly deciphering between flaming and smoldering fires, this alarm is equipped with dual photoelectric and ionization smoke sensing technologies. Fast flaming fires spread quickly and leave minutes, maybe seconds, to react. Smoldering fires burn long and can unknowingly fill the home with smoke causing smoke inhalation. The SA320CN's smart sensing microchip helps determine the difference between non-threatening conditions and real emergencies.
This alarm comes equipped with a Mute Button that serves the dual purpose of quickly silencing your alarm as well as testing its function. The addition of an EZ access battery door removes the hassle and burden of collecting your alarm from the ceiling and replacing its batteries. 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. This alarm comes with a 10-year limited warranty and meets UL217 Standards.
First Alert Smoke Alarm SA320CN
* California Residents - Please Note This Alarm is Not Compliant with California State 10 Year Sealed Battery Alarm Legislation Requirements.
Ionization smoke alarms are more sensitive 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 alarms are generally more sensitive 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.
For maximum protection and full coverage from all types of fires, your best option is to use an smoke alarm that features both photoelectric and ionization sensing technologies.
Average Customer Rating Based on 54 reviews:
Easy Operation - 12/07/2017
Reviewer: Blaine Montgomery
Having shopped around for dual sensor alarms, these units were easy to install and were responsive to alert. My wife had been cooking dinner and just have had something begin to burn on bottom cavity of oven. The alarm was sensitive enough to pick this up in the room adjacent to the kitchen.
The dual smoke alarm is hard to find - 11/08/2017
Reviewer: Joanne Boone
It seems that a dual smoke alarm is the best. But I could not find it in Lowes. I wish you would check with Lowes and Home Depot to encourage them to add to their end cap display a greater variety of your products. Thank you.
Reviewer: David J Thomas
Ease of mounting excellent. Fits prior attachment locations. Photo/ion capability very important given recent studies of increased effectiveness of this type of detector. Battery life span still to be evaluated, but use of AA good since AAs are easily available. Many thanks.
Reviewer: Gary Moss
Units have been installed and are working as expected.
Reviewer: Arnold Sweet
Installed it, no problem. Until there is a fire, I will not know if it works well.
Reviewer: teddy j greene
Highly recommended - 01/30/2017
Reviewer: Alon Sapir
A must in all homes
smoke detectors - 09/30/2016
Reviewer: Don Smith
product was as described and easy to install. Replaced 20 yr old smoke detectors.
Dual sensor smoke alarm - 03/29/2016
Reviewer: Robert Holman
Alarm was easy to install. It has dual sensors to detect both types of fires. I feel safer sleeping at night.
Replacement Alarm - 12/31/2015
Reviewer: Charles Brady
Unit is a good replacement for an alarm that went bad after 10 years of use.
Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.