
Sorry, this item is out of stock
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack $55.86
$5586current price $55.86First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
224.3 out of 5 Stars. 22 reviewsKidde Fire Sentry Battery Operated 4-inch Smoke Detector, with 85 decibel alarm, 2 pack $11.36
$1136current price $11.36Kidde Fire Sentry Battery Operated 4-inch Smoke Detector, with 85 decibel alarm, 2 pack
16014.5 out of 5 Stars. 1601 reviewsFirst Alert Dual Sensor Smoke Alarm with 10-Year Sealed Battery, 1 pk $64.99
$6499current price $64.99First Alert Dual Sensor Smoke Alarm with 10-Year Sealed Battery, 1 pk
10 Year Smoke CO Alarm w Voice $53.95
$5395current price $53.9510 Year Smoke CO Alarm w Voice
183.9 out of 5 Stars. 18 reviewsUniversal Security Instruments Hardwire Smoke, Fire, Carbon Monxide, with Battery Backup, Voice Alert Alarm $64.97
$6497current price $64.97Universal Security Instruments Hardwire Smoke, Fire, Carbon Monxide, with Battery Backup, Voice Alert Alarm
50+ bought since yesterday First Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT $16.99 $28.80/ea
$1699current price $16.99$28.80/eaFirst Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT
644.4 out of 5 Stars. 64 reviewsFirst Alert 1046736, Battery Photoelectric Sensor Smoke Alarm 2 Piece $51.99 Was $62.99
$5199current price $51.99, Was $62.99$62.99First Alert 1046736, Battery Photoelectric Sensor Smoke Alarm 2 Piece
234.9 out of 5 Stars. 23 reviewsFirst Alert Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400, 1046718PT $34.99 $24.99/ea
$3499current price $34.99$24.99/eaFirst Alert Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400, 1046718PT
64.8 out of 5 Stars. 6 reviewsUniversal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery $27.97
$2797current price $27.97Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery
534.5 out of 5 Stars. 53 reviewsUniversal Security Instruments Hardwire Smoke & Fire Alarm, with Battery Back-up $27.97
$2797current price $27.97Universal Security Instruments Hardwire Smoke & Fire Alarm, with Battery Back-up
15 out of 5 Stars. 1 reviewsUniversal Security Instruments 10-Year Battery, Smoke & Fire Alarm $29.97
$2997current price $29.97Universal Security Instruments 10-Year Battery, Smoke & Fire Alarm
Universal Security Instruments Hardwire Smoke & Fire Alarm, with 10-Year Battery Backup $44.97
$4497current price $44.97Universal Security Instruments Hardwire Smoke & Fire Alarm, with 10-Year Battery Backup
First Alert SC5 Hardwire Smart 2-in-1 Smoke and CO Alarm with Voice Alerts and Battery Backup $139.99
$13999current price $139.99First Alert SC5 Hardwire Smart 2-in-1 Smoke and CO Alarm with Voice Alerts and Battery Backup
First Alert SC5 Battery Smart 2-in-1 Smoke and CO Alarm with Voice Alerts $114.48
$11448current price $114.48First Alert SC5 Battery Smart 2-in-1 Smoke and CO Alarm with Voice Alerts


First Alert Dual-sensor Smoke and Fire Alarm, Battery Powered, SA320CN
Key item features
- Dual Sensing: Equipped with two sensors, this alarm effectively detects smoke from both smoldering and flaming fires, providing comprehensive protection.
- False Alarm Reduction: Engineered with intelligent sensing technology, it is designed to minimize false alarms triggered by common occurrences like cooking smoke or steam.
- Audible Alert: A loud 85dB alarm ensures that the alert is easily heard throughout the home, providing timely notification of potential fire hazards.
- Simple Operation: Features a single test/silence button for straightforward operation, allowing users to easily test the alarm or silence it when needed.
- Battery Powered: This fire detector is battery-powered, offering flexible installation anywhere without the need for electrical wiring.
- Included Accessories: Comes with two AA batteries and a mounting bracket, providing everything needed for immediate installation and use.
Specs
- Power typeBattery
- Battery life8760 h
- FeaturesLow Battery Indicator
- Batteries inclY
- Smart techN
- Decibel rating85 dB
How do you want your item?
About this item
Product details
- Model number SA320CN
- 2 sensors detect smoke from both smoldering & flaming fires
- Engineered to reduce false alarms from cooking smoke or steam
- Loud 85dB alarm is designed to be heard easily
- Single test/silence button for simple operation
- Battery-powered fire detector installs anywhere with no wiring required
- 10-year limited warranty
- Includes 2 AA batteries & mounting bracket
Specifications
Power type
Battery life
Smoke & carbon monoxide alarm sensor technology
Brand
Warranty
Warranty information
Warranty url
Warnings
Ingestion Hazard
Warning Text
More items to consider
Based on what customers bought
Best seller Brink's Privacy Bed/Bath Tulip Style Doorknob, Satin Nickel Finish $16.97
Best seller
9 optionsAvailable in additional 9 options$1697current price $16.97More options from $15.99Brink's Privacy Bed/Bath Tulip Style Doorknob, Satin Nickel Finish
5364.4 out of 5 Stars. 536 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 1A10BC Basic Use Fire Extinguisher, 2.5 lbs $35.89
$3589current price $35.89+$9.99 shippingKidde 1A10BC Basic Use Fire Extinguisher, 2.5 lbs
12004.6 out of 5 Stars. 1200 reviewsShipping, arrives in 3+ daysBest seller Energizer MAX (24 Pack), Double A Batteries $16.49
Best seller
$1649current price $16.49Energizer MAX (24 Pack), Double A Batteries
103094.6 out of 5 Stars. 10309 reviewsSave withShipping, arrives tomorrowDuracell Coppertop 9V Battery, Long Lasting Batteries, 4 Pack $18.79 $4.70/ea
$1879current price $18.79$4.70/eaDuracell Coppertop 9V Battery, Long Lasting Batteries, 4 Pack
16674.7 out of 5 Stars. 1667 reviewsSave withShipping, arrives tomorrowEnergizer Ultimate Lithium AA Batteries (8 Pack), Double A Batteries $20.28 Was $25.00 $2.54/ea
Now$2028current price Now $20.28, Was $25.00$25.00$2.54/eaYou save $4.72You save$4.72Energizer Ultimate Lithium AA Batteries (8 Pack), Double A Batteries
27044.7 out of 5 Stars. 2704 reviewsSave withShipping, arrives tomorrow100+ bought since yesterday Duracell Coppertop AA Alkaline Batteries 8/PK $7.11 Was $13.49
100+ bought since yesterday
Now$711current price Now $7.11, Was $13.49$13.49You save $6.38You save$6.38Options from $7.11 – $8.26Duracell Coppertop AA Alkaline Batteries 8/PK
180094.7 out of 5 Stars. 18009 reviewsSave withShipping, arrives today100+ bought since yesterday Filtrete 16x20x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64
100+ bought since yesterday
$564current price $5.64Filtrete 16x20x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
24894.6 out of 5 Stars. 2489 reviewsSave withShipping, arrives todayRayovac High Energy 9V Batteries (4 Pack), Alkaline 9 Volt Batteries $12.97
3 optionsAvailable in additional 3 options$1297current price $12.97More options from $6.97Rayovac High Energy 9V Batteries (4 Pack), Alkaline 9 Volt Batteries
15664.6 out of 5 Stars. 1566 reviewsSave withShipping, arrives today100+ bought since yesterday Duracell Coppertop AA Alkaline Batteries 24/PK $22.49 Was $28.82 93.7 ¢/ea
100+ bought since yesterday
Now$2249current price Now $22.49, Was $28.82$28.8293.7 ¢/eaYou save $6.33You save$6.33Duracell Coppertop AA Alkaline Batteries 24/PK
179744.7 out of 5 Stars. 17974 reviewsSave withShipping, arrives tomorrowDuracell Coppertop AA Battery with POWER BOOST™, 16 Pack Long-Lasting Batteries $14.95
2 optionsAvailable in additional 2 options$1495current price $14.95Options from $14.95 – $31.94Duracell Coppertop AA Battery with POWER BOOST™, 16 Pack Long-Lasting Batteries
85394.7 out of 5 Stars. 8539 reviewsSave withShipping, arrives todayDuracell Coppertop 9V Alkaline Batteries 2/PK $8.21 Was $10.00 $4.11/ea
Now$821current price Now $8.21, Was $10.00$10.00$4.11/eaYou save $1.79You save$1.79Duracell Coppertop 9V Alkaline Batteries 2/PK
38524.7 out of 5 Stars. 3852 reviewsSave withShipping, arrives today
Popular items in this category
Best selling items that customers love
First Alert PRC710, Battery-Powered Ionization Smoke Alarms $18.67 Was $21.99
Now$1867current price Now $18.67, Was $21.99$21.99You save $3.32You save$3.32First Alert PRC710, Battery-Powered Ionization Smoke Alarms
194.5 out of 5 Stars. 19 reviewsSave withShipping, arrives in 3+ daysFirst Alert 1046731, Battery Photoelectric Sensor Smoke Alarm $29.99 Was $35.05
Now$2999current price Now $29.99, Was $35.05$35.05You save $5.06You save$5.06First Alert 1046731, Battery Photoelectric Sensor Smoke Alarm
144.2 out of 5 Stars. 14 reviewsSave withShipping, arrives in 3+ daysFirst Alert 1046755, Battery Photoelectric Smoke Alarm $28.16
$2816current price $28.16First Alert 1046755, Battery Photoelectric Smoke Alarm
144.3 out of 5 Stars. 14 reviewsSave withShipping, arrives in 3+ daysFirst Alert Hardwired Smoke Alarm with Battery Backup 6 PACK $137.20
$13720current price $137.20First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK
334.7 out of 5 Stars. 33 reviewsSave withShipping, arrives tomorrowFirst Alert Voice Alert Hard-Wired Photoelectric Smoke Detector $33.99
$3399current price $33.99First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
134.6 out of 5 Stars. 13 reviewsSave withShipping, arrives in 3+ daysFirst Alert 1046856, 10 Year Battery Ionization Smoke Alarm $24.59 Was $28.00
Now$2459current price Now $24.59, Was $28.00$28.00You save $3.41You save$3.41First Alert 1046856, 10 Year Battery Ionization Smoke Alarm
364.6 out of 5 Stars. 36 reviewsSave withShipping, arrives in 3+ daysFirst Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $28.99
$2899current price $28.99First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup
324.8 out of 5 Stars. 32 reviewsSave withShipping, arrives tomorrowFirst Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup $31.75
$3175current price $31.75First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup
334.3 out of 5 Stars. 33 reviewsSave withShipping, arrives in 2 daysFirst Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT $62.99 $74.11/ea
$6299current price $62.99$74.11/eaFirst Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT
35 out of 5 Stars. 3 reviewsSave withFirst Alert 1046834, Electric Precision Detection Smoke Alarms $24.84 Was $33.00
Now$2484current price Now $24.84, Was $33.00$33.00You save $8.16You save$8.16First Alert 1046834, Electric Precision Detection Smoke Alarms
744.5 out of 5 Stars. 74 reviewsSave withFirst Alert BRK FG250B Dual Ionization Smoke Alarm with 9-Volt Battery, 1", White $21.99
$2199current price $21.99First Alert BRK FG250B Dual Ionization Smoke Alarm with 9-Volt Battery, 1", White
394.4 out of 5 Stars. 39 reviewsShipping, arrives in 3+ daysFirst Alert Dual-Power Carbon Monoxide Plug-in Alarm with Digital Display, 1039746PT $47.23 $68.45/ea
$4723current price $47.23$68.45/eaFirst Alert Dual-Power Carbon Monoxide Plug-in Alarm with Digital Display, 1039746PT
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ days
Customer ratings & reviews
Customer images






+10 images
Showing 1-3 of 54 reviews
Verified Purchase
SA320CN
As others have stated, product image does not match the product. However the product description is correct. Price was much lower than expected so was worried would get not the model I thought it was or much older manufactured dates. This is First Alert dual sensor smoke alarm only. Model SA320CN. Comes with 2 Duracell AA batteries. Ordered 6 (January 2024), all 6 had manufactured sticker date of October 2023. Pleased with purchase. This model was reviewed by a consumer group who reports on product testing. They gave it a high recommendation. We replaced all the expired detectors with these. We needed battery detectors not hardwired but we didn't want to go with the 10 year lithium versions.
Verified Purchase
First Alert Smoke Detectors
I purchased four of these Dual Sensor smoke alarms to replace the first ones I have had for ten years. Never had any problems with them; only replaced because of their age. I like that they are good for detecting both smoldering fires and flaming ones. I can use them throughout the house.
Verified Purchase
The pair of alarms ordered arrived as scheduled and undamaged in shipping. I can only test them and accept the fact that they will function if there is an emergency. Installation on the ceiling was simple because I could use mounting screws from the previous alarms. NOTE that the battery compartment is a pullout drawer not a hinged one like some other alarms.
