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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.
Wirelessly connect upto 18 first alert enabled alarms for the maximum in whole home protection; includes test/silence button, low battery warning, end of life timer. Voice alarm with 11 programmable locations tells you where the danger is so you can choose the best evacuation route; Loud, 85-decibel siren sounds to alert you to danger.


Includes test/silence button, low-battery warning, EZ access battery door. 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.


Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam. The z-wave plus with smart start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device.
Enjoy improved compatibility, easier setup and a seamless in-app experience. Help keep your family safe with this battery-powered smoke detector and carbon monoxide alarm; includes 2 AA batteries. Includes an 85-decibel horn, side access to a tamper-resistant battery door, single test/silence button, and pins that lock the alarm to the mounting bracket.

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.
Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 pre-programmed locations in your home. Features electrochemical carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms.

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. Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected. Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure.

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.

Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire. It can ship within the US except New York. Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home.
Simple to use, with a single test/silence button, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling. 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.

10 year limited warranty; equipped with end of life signal chirp, so you know when it's time to replace the unit for your safety.
Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure. 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.
1. FIRST ALERT
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2 Pack, First Alert SA511CN2-3ST Wireless Interconnected Smoke Alarm with Voice Location, Battery Operated
#adFIRST ALERT #ad - Battery powered alarm requires no rewiring for installation and provides continued monitoring even if there's a power failure; use with Polaroid AA batteries for best results. Help keep your family safe with these battery operated smoke alarms that wirelessly interconnect with each other and other First Alert enabled alarms so that all sound when one is activated, creating a home safety network; comes in a pack of 2 alarms.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
Equipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; Helps minimize the number of false alarms. Wirelessly connect upto 18 first alert enabled alarms for the maximum in whole home protection; includes test/silence button, low battery warning, end of life timer. Voice alarm with 11 programmable locations tells you where the danger is so you can choose the best evacuation route; Loud, 85-decibel siren sounds to alert you to danger.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 0.65 Pounds |
Width | 0 Inches |
Part Number | SA511CN2-3ST |
Model | SA511CN2-3ST |
Warranty | 10 year |
More information #ad
2. FIRST ALERT
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First Alert SCO500B Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location
#adFIRST ALERT #ad - When one alarm sounds, all alarms will sound. Wireless interconnect uses radio frequency communication to connect the alarms, without any electrical wiring needed. When your alarms are interconnected, they communicate with each other, forming an integrated system of protection for your home.More information #ad
Connects multiple alarms together for wireless safety network not z-wave compatible. Voice alarm gives clear indication of what the danger is and where it is located. Battery operated smoke and carbon monoxide alarm can be installed easily.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5.13 Inches |
Length | 5.13 Inches |
Weight | 0.6 Pounds |
Width | 2.38 Inches |
Part Number | SCO500B |
Model | OLCOMBOVFF |
Warranty | 7 |
More information #ad
3. FIRST ALERT
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FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST
#adFIRST ALERT #ad - Wirelessly connect up to 18 First Alert enabled alarms for the maximum in whole-home protection. Hardwired alarm includes 2 AA backup batteries for continued monitoring in the event of a power outage.Includes test/silence button, low-battery warning, EZ access battery door. 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 hardwired smoke alarm that wirelessly interconnects with other First Alert–enabled alarms to create a home safety network. Equipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms.Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 5 Inches |
Length | 5 Inches |
Weight | 0.78 Pounds |
Width | 2 Inches |
Part Number | SA520B-SA521CN |
Model | SA521CN-3ST |
More information #ad
4. FIRST ALERT
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First Alert Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location, SC500-3
#adFIRST ALERT #ad - Features photoelectric smoke sensor and electrochemical CO sensor. Voice alarm gives clear indication of where the problem is located.More information #ad
One button silences a false alarm and tests the unit. Battery-operated smoke and carbon monoxide alarm. Connects multiple alarms together for wireless safety network.Brand | FIRST ALERT #ad |
Manufacturer | BRK Brands #ad |
Height | 9 Inches |
Length | 10.75 Inches |
Weight | 2.45 Pounds |
Width | 7.13 Inches |
Part Number | 1042870 |
Model | 1042870 |
Warranty | 7-YEAR LIMITED WARRANTY |
More information #ad
5. FIRST ALERT
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Works with Ring Alarm, First Alert Z-Wave Smoke Detector & Carbon Monoxide Alarm, 2nd Generation
#adFIRST ALERT #ad - This device is certified to work with Ring; Requires Ring Alarm to Work with Ring. Certified to work with smart home systems such as ring Alarm, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub sold separately; Not compatible with Wink or Onelink.Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam. The z-wave plus with smart start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device.
More information #ad
Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected. Enjoy improved compatibility, easier setup and a seamless in-app experience. Help keep your family safe with this battery-powered smoke detector and carbon monoxide alarm; includes 2 AA batteries. Includes an 85-decibel horn, side access to a tamper-resistant battery door, single test/silence button, and pins that lock the alarm to the mounting bracket.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 8.5 Inches |
Length | 3.66 Inches |
Weight | 0.68 Pounds |
Width | 6.75 Inches |
Part Number | 1044807 |
Model | 1044807 |
Warranty | 7 Year Limited Warranty |
More information #ad
6. FIRST ALERT
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FIRST ALERT BRK SC7010BV-3 Hardwired Talking Photoelectric Smoke and Carbon Monoxide CO Detector, 3-Pack
#adFIRST ALERT #ad - Keep your family safe with this 3-pack of talking hardwired smoke and carbon monoxide alarms; they're equipped with voice and location, so you are alerted of the danger and where it originates from across your house.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
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected. Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 pre-programmed locations in your home. Features electrochemical carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert / BRK Brands, Inc. #ad |
Height | 2.4 Inches |
Length | 5.1 Inches |
Weight | 0.74 Pounds |
Width | 5.1 Inches |
Part Number | SC7010BVFF-3 |
Model | BRK SC7010BV-3 |
More information #ad
7. FIRST ALERT
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First Alert BRK 9120B Hardwired Smoke Alarm with Battery Backup , White
#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.Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety.
More information #ad
Rigorously tested to meet ul standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage. To ensure complete protection make sure to place one on each level of your home and in each bedroom. Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm. Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected. Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure.
Brand | FIRST ALERT #ad |
Manufacturer | First Alert #ad |
Height | 2.2 Inches |
Length | 5.6 Inches |
Weight | 0.8 Pounds |
Width | 5.6 Inches |
Part Number | 9120BFF |
Model | 9120B |
Warranty | 10 Year Limited |
More information #ad
8. FIRST ALERT
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Frustration-Free Packaging , GRAY, First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Battery Powered
#adFIRST ALERT #ad - Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires. Single test/silence button lets you easily check alarm function and mute false alarms; Use Polaroid AA batteries for best results.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.
More information #ad
To ensure complete protection make sure to place one on each level of your home and in each bedroom. Loud 85 decibel siren sounds to alert you to danger. 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 | 2 Inches |
Length | 5 Inches |
Weight | 0 Pounds |
Width | 5 Inches |
Part Number | SA320CN |
Model | SA320FF |
Warranty | 10 Year Limited |
More information #ad
9. FIRST ALERT
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First Alert SCO7CN Combination Smoke and Carbon Monoxide Detector with Voice and Location, Battery Operated , White
#adFIRST ALERT #ad - Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house.Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire. It can ship within the US except New York. Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home.
More information #ad
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. Simple to use, with a single test/silence button, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling. 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 | Petra Industries, Inc. - Consumer Electronics Replen #ad |
Height | 5 Inches |
Length | 5 Inches |
Weight | 0.67 Pounds |
Width | 2 Inches |
Part Number | SCO7CN |
Model | PC900V |
More information #ad
10. FIRST ALERT
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First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide CO Detector with Battery Backup , White
#adFIRST ALERT #ad - Rigorously tested to meet UL standards. In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues. Features electrochemical carbon monoxide sensing technology as well as a photoelectric sensor equipped with Optipath 360 technology that enhances detection with 360 degree access and reliably detects smoke from smoldering fires.10 year limited warranty; equipped with end of life signal chirp, so you know when it's time to replace the unit for your safety.
More information #ad
Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected. Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure. 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 | 2 Inches |
Length | 5 Inches |
Weight | 0.7 Pounds |
Width | 5 Inches |
Part Number | SC7010B |
Model | SC7010B |
Warranty | 7 Year Limited Warranty |
More information #ad