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Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety.
Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection. 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 an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm. To ensure complete protection make sure to place one on each level of your home and in each bedroom.
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. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected.

Ionization sensing technology may detect invisible fire particles, associated with flaming fires, quickly and sound an 85dB alarm. Ul listed, 10-year limited warranty.

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.
Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm. Rigorously tested to meet ul standards ; 120-volt hardwired smoke alarm wires directly into your home’s electrical system. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.

Ul certified, 10-year limited warranty. Hardwired alarm contains a 10-year tamper proof backup battery to protect your home and family during power outages, eliminates the need for battery replacement.

Convenient adapter plugs makes it easy to replace existing hardwired alarms without needing to rewire. 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.
Keep your family safe with this hardwired First Alert smoke alarm with a 10-year battery backup, which means constant monitoring for the life of the alarm, even if there's a power failure. Emits t3 pattern; Rigorously tested to meet UL standards.



1. Kidde
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Kidde Smoke Detector, Hardwired Smoke Alarm with Lithium Battery Backup, Interconnect, Test-Silence Button
#adKidde #ad - Ionization sensing technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire. Test-hush feature - silences the unit for approximately 9 minutes. Whole home family protection - place 1 fire detector on each level of your home & in your bedroom - maximum of 24 Kidde smoke or CO detectors can be interconnected in a multiple stations.More information #ad
Protects during a power failure - smoke alarm operates on a 120V power source with 3V lithium battery backup. Ul certified, 10-year limited warranty.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.5 Inches |
Length | 5.5 Inches |
Weight | 0.45 Pounds |
Width | 1.75 Inches |
Part Number | 21029760 |
Model | i12010S |
Warranty | 10 year limited warranty |
More information #ad
2. FIRST ALERT
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White, First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide CO Detector with 10 Year Sealed Battery Backup
#adFIRST ALERT #ad - Rigorously tested to meet UL standards, Emits T3 pattern. Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering. Keep your family safer with this hardwired smoke and carbon monoxide alarm; The 10 year battery backup means constant monitoring for the life of the alarm even if there's a power failure.Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety.
More information #ad
Features an electrochemical carbon monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms; Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection. 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.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.69 Inches |
Length | 5.59 Inches |
Weight | 0.68 Pounds |
Width | 2.25 Inches |
Part Number | SC9120LBL |
Model | BRK SC9120LBL |
Warranty | 7 |
More information #ad
3. FIRST ALERT
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12-Pack, First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup
#adFIRST ALERT #ad - Keep your family safe with this 12-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 an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm. To ensure complete protection make sure to place one on each level of your home and in each bedroom.
More information #ad
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. 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. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert / BRK Brands, Inc. #ad |
Height | 2.2 Inches |
Length | 5.6 Inches |
Weight | 0.6 Pounds |
Width | 5.6 Inches |
Part Number | 9120BFF-12 |
Model | 9120BFF-12 |
More information #ad
4. Kidde
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Pack of 6, Kidde Smoke Detector, Interconnect, Hardwired Smoke Alarm with Battery Backup Included
#adKidde #ad - Package contains 6 Kidde smoke detectors. Hardwired smoke detector with battery backup included ensures that you'll be alerted to a fire, even during a power outage.Ionization sensing technology may detect invisible fire particles, associated with flaming fires, quickly and sound an 85dB alarm. Ul listed, 10-year limited warranty.
More information #ad
Whole home family protection - place 1 fire alarm on each level of your home & in your bedroom; maximum of 24 Kidde devices can be interconnected. Large base makes mounting easy, while a front battery pull lets you activate the smoke alarm without removing it from the mounting bracket.Brand | Kidde #ad |
Manufacturer | Kidde #ad |
Height | 5.6 Inches |
Length | 2.36 Inches |
Weight | 0.6 Pounds |
Width | 1.55 Inches |
Part Number | i12040 |
Model | I12040A |
Warranty | 10 year limited manufacturer |
More information #ad
5. FIRST ALERT
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FIRST ALERT BRK 9120LBL Hardwired Smoke Detector with Battery Backup
#adFIRST ALERT #ad - Keep your family safe with this hardwired smoke alarm; the 10-year battery backup means constant monitoring for the life of the alarm, 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.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.
More information #ad
Emits T3 Pattern. Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm. Rigorously tested to meet ul standards ; 120-volt hardwired smoke alarm wires directly into your home’s electrical system. 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 | 5.69 Inches |
Length | 5.59 Inches |
Weight | 0.66 Pounds |
Width | 2.25 Inches |
Part Number | 9120LBL |
Model | 9120LBLFF |
Warranty | 10 |
More information #ad
6. Kidde
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Voice Warning, Kidde Smoke & Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup
#adKidde #ad - Led lights indicate the alarm's status, with a voice warning to indicate which type of threat is present; a Hush feature silences nuisance alarms, while the end-of-life alert lets you know when it's time to replace the unit.Ul certified, 10-year limited warranty. Hardwired alarm contains a 10-year tamper proof backup battery to protect your home and family during power outages, eliminates the need for battery replacement.
More information #ad
Intelligent technology – smoke and carbon monoxide detector combines ionization & electrochemical sensors to detect invisible fire particles & CO gas; 85dB alarm and voice warning sound when hazard is detected. Smart interconnect allows you to connect up to 24 Kidde devices, giving you trusted protection throughout your home.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 5.5 Inches |
Length | 5.5 Inches |
Width | 1.5 Inches |
Part Number | 21029756 |
Model | i12010SCO |
Warranty | 10 year limited warranty |
More information #ad
7. FIRST ALERT
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FIRST ALERT BRK 9120LBL Hardwired Smoke Detector with Adapter Plugs for Easy Replacement , White
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm.Convenient adapter plugs makes it easy to replace existing hardwired alarms without needing to rewire. 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.
More information #ad
Can connect to other compatible BRK or First Alert smoke alarms, to ensure all alarms will sound when smoke is detected. 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. Keep your family safe with this hardwired First Alert smoke alarm with a 10-year battery backup, which means constant monitoring for the life of the alarm, even if there's a power failure. Emits t3 pattern; Rigorously tested to meet UL standards.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.25 Inches |
Length | 5.75 Inches |
Weight | 0 Pounds |
Width | 5.75 Inches |
Part Number | 1039939 |
Model | 9120LBL |
More information #ad
8. Kidde
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Hardwired with Battery Backup & Interconnect, Kidde Smoke Detector, Smoke Alarm with LED Lights
#adKidde #ad - Protects during a power failure - smoke alarm operates on a 120V power source with 9V battery backup. Test-hush feature - silences the unit for approximately 7 minutes. Ul certified, 10-year limited warranty. Whole home family protection - place 1 fire detector on each level of your home & in your bedroom - maximum of 24 Kidde smoke or CO detectors can be interconnected in a multiple stations.More information #ad
Photoelectric sensing technology - hardwired smoke detector detects visible fire particles associated with smoldering fires, 85 decibel alarm alerts of fire.Brand | Kidde #ad |
Manufacturer | Kidde Safety #ad |
Height | 6 Inches |
Length | 2 Inches |
Width | 6 Inches |
Part Number | 21006371 |
Model | P12040 |
Warranty | 5 Year Limited |
More information #ad
9. FIRST ALERT
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6-Pack, First Alert BRK 9120Bff-6 Hardwired Smoke Detector with Battery Backup
#adFIRST ALERT #ad - Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Open mounting design for easy installation with side load battery compartment for quick replacement and interconnect able up to 18 units 12 smoke, 6 co/heat/relay.More information #ad
120-volt ac power with 9-volt battery backup included to keep alarm functioning during power outage. Tamper resistant locking pins, single button silence/test and loud 85Db alarm. 10-year limited. 6 pack of hardwired smoke alarms, includes battery backup for power outages.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.2 Inches |
Length | 5.6 Inches |
Weight | 0.6 Pounds |
Width | 5.6 Inches |
Part Number | 9120BFF-6 |
Model | 9120BFF-6 |
More information #ad
10. FIRST ALERT
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6-Pack , First Alert BRK 7010BFF-6 Hardwired Smoke Detector with Photoelectric Sensor and Battery Backup, White
#adFIRST ALERT #ad - Backed by 10-year limited and tested to meet UL 217 standards. 6 pack of 120-volt hardwire smoke alarms with photoelectric sensor and battery backup. 85 decibel alarm. Features convenient 9 volt battery backup, silence/test button, dust cover, 85-decibel alarm.More information #ad
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Intuitive latching alarm indicator identifies which unit triggered alarm. Inter-connectable with BRK and First Alert hardwired smoke and Carbon monoxide alarms.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 16.5 Inches |
Length | 6 Inches |
Weight | 0.7 Pounds |
Width | 5 Inches |
Part Number | 7010BFF-6 |
Model | 7010BFF-6 |
More information #ad