The Best Smoke Co Detector as Reviewed by Experts: Top-Rated & Hot Deal for you

Fire & CO detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire! Fire!", "Warning! Carbon Monoxide!", or "Low Battery!"

Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire

Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries

Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling

UL Certified, 10-year limited warranty

Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, 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

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

Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours

Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling

7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards. Emits T3 Pattern

It can ship within the US except New York

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 smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure

Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection.

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

Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected

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

Rigorously tested to meet UL standards

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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)

Fire & CO Detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire! Fire!", "Warning! Carbon Monoxide!", or "Low Battery!"

Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire

Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup

Test-Hush Feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling

UL Certified, 10-year limited warranty

Meets safety standards set by Underwriters Laboratories (UL) and interconnects with other KN-COSM-IBA models

120V AC, All Kidde brand hard wired smoke alarms are interconnectable with the KN-COSM-IBA

10-Year Battery: Provides 10 years of continuous power with a built-in lithium battery; saves you from battery replacement

Informative LCD: Clearly indicates real-time carbon monoxide (CO) levels in the surrounding air, as well as its battery level and working status

2-in-1 Protection: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that both detect smoke and dangerous CO levels

ETL Certified: Meets the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product

Simple Installation: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs

Assured Quality: We offer a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support

Complies with all current 10 year legislation in U. S. states/cities where required

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

A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise

Features a sleek, low profile design to blend more fully into the wall and out of sight

10-year limited ; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for your safety (the date printed on the item is the manufacturing date, not the expiration date)

Rigorously tested to meet UL standards

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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 smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure

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

In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues

Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected

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

Rigorously tested to meet UL standards

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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 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

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

Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering

10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety

Rigorously tested to meet UL standards, Emits T3 pattern

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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)

Fire & CO Detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire! Fire!", "Warning! Carbon Monoxide!", or "Low Battery!"

Photoelectric sensor technology - hardwired smoke detector detects visible fire particles, 85 decibel alarm alerts of fire

Protects during a power failure - combo smoke and CO detector operates on a 120V power source with 9V front-loading battery backup

Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling

UL Certified, 10-year limited warranty