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Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert brand trust survey in February 2018.



Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires, which alerts you with an 85 decibel alarm. Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast burning and smoldering fires.





To ensure complete protection make sure to place one on each level of your home and in each bedroom. Alarm features an ionization sensor for smoke detection, which is effective in recognizing smoke from flaming fires such as paper and grease fires.
Battery-operated unit provides continuous monitoring even if there's a power failure: Plus, it's easy to install. No battery changes for the Life of the Alarm; 3V Lithium Power Cell Included. Perfect mount allows for easy alignment of alarm. 10-year limited warranty. Ionization Sensor. Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit.

Note: a loose neutral white wire connection within the home junction box could prompt a device malfunction. Rigorously tested to meet UL standards.
To ensure complete protection make sure to place one on each level of your home and in each bedroom. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected. Emits T3 pattern. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
1. FIRST ALERT
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Battery Powered, 1 Pack, First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Frustration-Free Packaging, White
#adFIRST ALERT #ad - Single test/silence button lets you easily check alarm function and mute false alarms; Use Polaroid AA batteries for best results. Loud 85 decibel siren sounds to alert you to danger.Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert brand trust survey in February 2018.
More information #ad
Help keep your family safe with this battery operated smoke alarm; It requires no rewiring for installation and provides continuous monitoring even if there's a power failure. To ensure complete protection make sure to place one on each level of your home and in each bedroom.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2 Inches |
Length | 5 Inches |
Weight | 0 Pounds |
Width | 5 Inches |
Part Number | SA320CN |
Model | SA320FF |
Warranty | 10 Year Limited |
More information #ad
2. FIRST ALERT
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Dual Sensing Smoke Alarm, First Alert BRK 3120B Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup, 1-Pack
#adFIRST ALERT #ad - Two latching features help indicate a low battery or the originating alarm in a system. Hardwire alarm includes battery backup for protection during power outages. This dual sensor, photoelectric and ionization alarm alerts you to both smoldering and fast-flaming fires in the event of a home fire emergency.More information #ad
A single test button makes alarm easy to test regularly. The first alert hardwired dual sensor Photoelectric and Ionization Smoke Alarm with Battery Backup is designed to help provide peace of mind.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.4 Inches |
Length | 5.7 Inches |
Width | 5.7 Inches |
Part Number | 3120FF |
Model | 3120FF |
Warranty | 10 Year Limited |
More information #ad
3. Kidde
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Kidde Battery Dual Photoelectric and Ionization Sensor Smoke Detector Alarm | Model Pi9010
#adKidde #ad - Hush feature Temporarily Silences Nuisance Alarms. Kidde's smoke alarms meet the requirements of underwriters Laboratories Ul, An Independent Facility That Tests Products For Compliance With Widely-Accepted Safety Standards.More information #ad
The kidde pi9010 is a 9V battery powered smoke alarm. Model number: Pi9010 .Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 2.2 Inches |
Length | 11.3 Inches |
Width | 7.6 Inches |
Part Number | 21026062-N |
Model | 21026062-N |
More information #ad
4. FIRST ALERT
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FIRST ALERT BRK 3120B-3 Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup, 3-Pack
#adFIRST ALERT #ad - Keep your family safe with this 3 pack of hardwired smoke alarms; The battery backup means constant monitoring, even if there's a power failure. Faster turnarounds on job sites with the easy to install, most trusted alarms in home safety.Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires, which alerts you with an 85 decibel alarm. Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast burning and smoldering fires.
More information #ad
Simple to use, with a single test/silence button and side load battery compartment; Included mounting bracket makes installation easy. Equipped with optipath 360 technology that enhances detection with 360 degree access, and reliably detects smoke. To ensure complete protection make sure to place one on each level of your home and in each bedroom.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.4 Inches |
Length | 5.7 Inches |
Weight | 0.7 Pounds |
Width | 5.7 Inches |
Part Number | 3120BFF-3 |
Model | BRK 3120B-3 |
More information #ad
5. Kidde
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Kidde PI2010 Hardwired Dual Photoelectric and Ionization Sensor Smoke Alarm with Battery Backup
#adKidde #ad - Interconnectable, 120V hardwire alarm with battery backup that provides protection even during a power outage. Hush feature temporarily silences nuisance alarms. Test/reset button tests units electronic circuitry and horn.More information #ad
Audio alarm:85dB at 10ft. Dual sensor contains both a photoelectric and ionization sensor providing dual sensor protection in your home. Red led flashes every 30-40 seconds to indicate that the smoke alarm is operating properly.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 2.8 Inches |
Length | 7.8 Inches |
Width | 7.3 Inches |
Part Number | 21026061 |
Model | 21026061 - N |
More information #ad
6. FIRST ALERT
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1", First Alert BRK FG250B Dual Ionization Smoke Alarm with 9-Volt Battery, White
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Tamper resistant locking Pin Locks, Alarm Cover to Prevent Removal of Battery. Silence feature Silences Nuisance Alarms. Approved for RV Use. Dual ionization Sensing Chamber. 9v battery Included.More information #ad
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 1.6 Inches |
Length | 4.25 Inches |
Weight | 0.2 Pounds |
Width | 4.25 Inches |
Part Number | FG250B |
Model | FG250B |
Warranty | 10 Year Limited Warranty |
More information #ad
7. Kidde
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9-Volt Battery Operated, Kidde Smoke Detector, Ionization Smoke Alarm, Battery Included
#adKidde #ad - Ul certified, 10-year limited manufacturer warranty. Powered by a 9v battery included, the smoke alarm protects even when the power is out. Basic ionization smoke alarm, affordable and simple to use to provide detection of dangerous smoke or fire.More information #ad
Test-hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam. An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire. Easy installation – this basic smoke detector requires no wiring. Green led indicates power to the smoke detector.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 1 Inches |
Length | 2 Inches |
Weight | 1 Pounds |
Width | 1 Inches |
Part Number | 21026051 |
Model | i9050 |
More information #ad
8. FIRST ALERT
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First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast-burning and smoldering fires.More information #ad
Optipath 360 Technology. 2 aa batteries included; 10 Year Limited Warranty. Dual photoelectric and Ionization sensing technologies for optimal sensing of smoke particles produced in both flaming and smoldering fires. Two latching Features. Two silence Features.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2 Inches |
Length | 5 Inches |
Weight | 0.73 Pounds |
Width | 5 Inches |
Part Number | 3120B |
Model | 3120B |
Warranty | 10 Year Limited Warranty |
More information #ad
9. FIRST ALERT
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White, First Alert 0827B Ionization Smoke Alarm with 10-Year Sealed Tamper-Proof Battery
#adFIRST ALERT #ad - Perfect mount allows for easy alignment of alarm. Sensor Type: Ionization. States/cities where required. First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018.To ensure complete protection make sure to place one on each level of your home and in each bedroom. Alarm features an ionization sensor for smoke detection, which is effective in recognizing smoke from flaming fires such as paper and grease fires.
More information #ad
No battery changes for the Life of the Alarm; 3V Lithium Power Cell Included. Same features as sa340cn and SA340B but adds Sealed Battery Technology. Ionization Sensor. 10-year limited warranty. Battery-operated unit provides continuous monitoring even if there's a power failure: Plus, it's easy to install. No battery changes for the Life of the Alarm; 3V Lithium Power Cell Included. Perfect mount allows for easy alignment of alarm. 10-year limited warranty. Ionization Sensor. Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.6 Inches |
Length | 5.6 Inches |
Weight | 0.01 Pounds |
Width | 2.25 Inches |
Part Number | FBA_0827B |
Model | 0827B |
Warranty | ------- |
More information #ad
10. FIRST ALERT
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First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack
#adFIRST ALERT #ad - First alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 Based on a First Alert Brand Trust Survey in February 2018. Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy.Note: a loose neutral white wire connection within the home junction box could prompt a device malfunction. Rigorously tested to meet UL standards.
More information #ad
Keep your family safe with this 6 pack of hardwired smoke alarms; the battery backup means constant monitoring, even if there's a power failure. Easy-to-access battery drawer that allows you to replace the battery without dismounting the alarm. To ensure complete protection make sure to place one on each level of your home and in each bedroom. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected. Emits T3 pattern. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.6 Inches |
Length | 5.6 Inches |
Width | 1.9 Inches |
Part Number | 9120B6CP |
Model | BRK9120b |
Warranty | 10 year |
More information #ad