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The First Alert SA320CN Dual-Sensor Smoke and Fire Alarm provides early warning of both flaming and smoldering fires. Additionally, its intelligent sensing technology is designed to cut down on nuisance alarms from cooking smoke or other common false-alarm triggers. A single button both silences and tests the smoke detector for simple operation. The battery-powered fire detector can be easily installed anywhere without wires.
Dual Sensors Detect Different Types of Fires
The First Alert Smoke and Fire Alarm comes equipped with two different sensors to offer the earliest possible warning of a fire. The ionization sensor detects flaming fires, such as grease fires or wastebasket fires, and the photoelectric sensor detects smoldering fires, such as when a lit cigarette ignites clothing or upholstery. Both sensors work together to provide comprehensive smoke and fire detection.
Smart Sensor Minimizes False Alarms
People sometimes disable a fire detector when it goes off due to cooking smoke or steam, even though in doing so they endanger themselves and their loved ones. Intelligent sensing technology in the First Alert Dual-Sensor Smoke and Fire Alarm is designed to distinguish between real fires and nuisances, reducing false alarms significantly so there is never a need to disable the alarm.
Battery-Powered Fire Detector Installs Anywhere
The battery-powered fire detector can be installed anywhere with no wires or electrician required. A low-battery indicator light and audible chirp let you know it is time to change batteries. The battery compartment opens without the need to remove the alarm from the mounting bracket, making battery replacements quick and easy.
First Alert Smart Sensing 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 designed to identify fires that are defined by their rapid flaming qualities. These fires are characterized by their ability to generate and combust at an advanced speed (ie. kitchen grease fires or fires fueled by paper burning in a wastebasket).
Photoelectric smoke alarms specialize in detecting fires that are indicative of their slow smoldering properties. These fires are defined by their propensity to produce large smoke particles that can smolder for hours before bursting into larger flames (ie. those caused by cigarettes or candles burning on couches or bedding).
For maximum protection and full coverage from all types of fires, your best option is to use a smoke alarm that features both photoelectric and ionization sensing technologies.
Average Rating Based on 65 reviews: (5)
Dual Sensor Smoke detectors - 02/11/2019
Reviewer: eli klugmann
These types of detectors sense both types of fires, slow smoldering, and fast burning. These are the only ones to buy! And fast service, good price.
Repaced 10-yr old alarms - 02/04/2019
Reviewer: Dennis Martin
I needed 6 dual sensor alarms to replace expired alarms. Very good price and fast delivery direct from First Alert. Very satisfied with purchase.
Reviewer: Billy Warhurst
great product and fast shipping.
1st Alert Smoke Alarm - 01/16/2019
Reviewer: Dana Dangar
So far, easy to install in the home, comes with batteries and works as advertised. Good deal.
Reviewer: Christopher Paul
Great value and reviews and comes with battery.
Dual is wise. - 01/07/2019
Reviewer: Van Sikes
Best protection for fire or smoke.
Tried and true - 01/02/2019
Reviewer: Donald Wright
Needed one more smoke detector for my son's room. I like how these employ both photoelectric and ionic sensors.
Great Prices ans Fast Delivery - 12/24/2018
Reviewer: Tom Lukes
I ordered these because the price was right and I wanted a dual sensor detector. This model had among the best ratings for battery operated models. The delivery was fast and I was pleasantly surprised to see batteries included as well.
Great Smoke Detector - 12/17/2018
Reviewer: Kevin C. Higgins
Covers smoke and fire bases versus one or the other.
Best Smoke Alarms I Have Tried - 11/28/2018
Reviewer: Phillip Farrar
This will be the third set of these that I have used in 30 Years. I replace them every 8-10 years. I have 4 in my home. They work and they make my home safe.
Actual battery service life depends on the particular design of your smoke or carbon monoxide alarm and the environment in which it is installed. All kinds of alarm batteries specified in the user's manual are acceptable replacement batteries. Regardless of the manufacturer's suggested battery life, you MUST replace the batteries immediately once the unit starts "chirping" (the "low battery warning"). It is recommended that you change the batteries in your alarms when you change your clocks for daylight saving time. Also consider replacing your current alarms with 10-Year Life Alarms that never require a costly battery replacement for the ten year life of the alarm. This 10-Year series is available in smoke, carbon monoxide and combination alarms.
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.
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