10 Best Ac Smoke Detectors
for December 2021

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1
9.8
SCORE
First Alert BRK SC9120B Hardwired Smoke Detector and Carbon Monoxide (CO) Detector with Battery Backup

First Alert BRK SC9120B Hardwired Smoke Detector and Carbon Monoxide (CO) Detector with Battery Backup

by First Alert
What We like

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

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Product Features

  • 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
  • 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
  • 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)
  • Rigorously tested to meet UL standards

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) Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection. 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 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 Can connect to other compatible brk or First Alert detectors, to ensure all alarms will sound when threat is detected

2
9.5
SCORE
Kidde KN-COSM-IBA Hardwire Combination Smoke Carbon Monoxide Detector Battery Backup Voice Warning Interconnectable

Kidde KN-COSM-IBA Hardwire Combination Smoke Carbon Monoxide Detector Battery Backup Voice Warning Interconnectable

by Kidde
What We like

Ionization Sensor Technology-Ideal for detecting fast flaming and other types of fires, est Button Functions: Tests the unit for proper operation - Peak Level memory - Resets the Carbon Monoxide alarm

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Product Features

  • Green LED-Illuminates to indicate the unit is receiving AC power. Flashes once every 60 seconds to indicate battery only mode. Flashes once per second during alarm to indicate initiating alarm. Flashes once every 16 seconds to indicate smoke or CO previously detected. Flashes every 2 seconds while the alarm is in HUSHTM mode
  • Peak Level Memory-Announces CARBON MONOXIDE PREVIOUSLY DETECTED if alarm has detected a CO level of 100ppm or higher since it was last reset, HushTM Feature-Silences nuisance alarms for approximately 9 minutes. (Smoke must be present before HushTM is activated)
  • Humidity range: 10%-95% relative humidity, non-condensing. Battery Lockout System-The battery door will not close unless the batteries are properly installed, Alarm Tamper Resist-Helps deter from tampering and theft, Adjustable Mounting Bracket-Makes installation fast and easy. Works with existing smoke and combination smoke and CO mounting brackets.
  • Test-reset button tests alarm circuitry and triggers the voice announcement
  • Battery safeguard ensures the unit cannot be accidentally mounted without batteries

Peak level memory-announces carbon monoxide previously detected if alarm has detected a co level of 100ppm or higher since it was last reset, hushtm feature-silences nuisance alarms for approximately 9 minutes. (smoke must be present before hushtm is activated) Battery safeguard ensures the unit cannot be accidentally mounted without batteries Combined carbon monoxide and smoke alarm, a single unit can be installed where previously two were needed Test-reset button tests alarm circuitry and triggers the voice announcement Smart interconnect-interconnects up to 24 Kidde devices (of which 18 can be initiating), battery backup (2-aa batteries included)-provides protection during power outages. front loading battery door-replace the backup batteries without disconnecting from mounting bracket Talking alarm announces the hazard type detected, helping to speed up reaction time Green led-illuminates to indicate the unit is receiving ac power. flashes once every 60 seconds to indicate battery only mode. flashes once per second during alarm to indicate initiating alarm. flashes once every 16 seconds to indicate smoke or co previously detected. flashes every 2 seconds while the alarm is in hushtm mode Red led-when a dangerous level of smoke or carbon monoxide is detected the red led will flash. if the unit malfunctions, the red led will flash and the unit will chirp every 30 seconds Meets safety standards set by underwriters laboratories (ul) and interconnects with other kn-cosm-iba models Humidity range: 10%-95% relative humidity, non-condensing. battery lockout system-the battery door will not close unless the batteries are properly installed, alarm tamper resist-helps deter from tampering and theft, adjustable mounting bracket-makes installation fast and easy. works with existing smoke and combination smoke and co mounting brackets.

3
9.2
SCORE
Kidde 21007624 AC Photoelectric Smoke and Carbon Monoxide Detector Alarm | Hardwired with Battery Backup | Model # KN-COPE-IC

Kidde 21007624 AC Photoelectric Smoke and Carbon Monoxide Detector Alarm

Hardwired with Battery Backup, Model # KN-COPE-IC

by Kidde
What We like

Front-loading battery with unique battery door design

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Product Features

  • Low Battery Warning - One chirp followed by warning LOW BATTERY. The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour the red LED light will flash once every minute accompanied by the chirp sound. The LOW BATTERY warning will only sound once every fifteen minutes. Voice Hush Indication: HUSH ACTIVATED and HUSH CANCELLED voice announcement
  • Carbon Monoxide Warning - Four short alarm beeps followed by a verbal warning WARNING! CARBON MONOXIDE! This continues until the unit is reset or the CO is eliminated.
  • Photoelectric smoke sensor May detect visible fire particles associated with slow smoldering fires sooner than an ionization sensor.
  • Voice warning with green and red LEDs
  • Front-loading battery with unique battery door design

Photoelectric smoke sensor may detect visible fire particles associated with slow smoldering fires sooner than an ionization sensor. Tamper resistant Ac-wire with battery backup, an included 9v battery protects during short-term power outages Alarm memory - the green led will blink once every 16 seconds to alert a user when the unit has alarmed for smoke or has detected a concentration of co. if the alarm has detected a co level of 100ppm or greater, when the test/reset button is pressed the unit will announce co previously detected. if the alarm has detected abnormal levels of smoke since its last test, it will produce three rapid beeps. Voice warning with green and red leds Fire warning - the red led will flash and be accompanied by three long alarm beeps followed by a verbal warning message fire! fire!. the alarm will repeat pattern until unit is reset or smoke is eliminated. Carbon monoxide warning - four short alarm beeps followed by a verbal warning warning! carbon monoxide! this continues until the unit is reset or the co is eliminated. Front-loading battery with unique battery door design Voice warning with green and red leds Provides protection from fire and carbon monoxide in one unit with photoelectric sensor.

4
9.1
SCORE
Kidde KN-COPE-IC AC Photoelectric Smoke and Carbon Monoxide Detector Alarm Hardwired With Battery Backup

Kidde KN-COPE-IC AC Photoelectric Smoke and Carbon Monoxide Detector Alarm Hardwired With Battery Backup

by Kidde
What We like

Provides protection from fire and carbon monoxide in one unit with Photoelectric sensor.

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Product Features

  • Low Battery Warning: One chirp followed by warning LOW BATTERY. The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour the red LED light will flash once every minute accompanied by the chirp sound. The LOW BATTERY warning will only sound once every fifteen minutes. Voice Hush Indication: HUSH ACTIVATED and HUSH CANCELLED voice announcement
  • Fire Warning: The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message FIRE! FIRE! . The alarm will repeat pattern until unit is reset or smoke is eliminated.
  • Alarm Memory: The green LED will blink once every 16 seconds to alert a user when the unit has alarmed for smoke or has detected a concentration of CO. If the alarm has detected a CO level of 100ppm or greater, when the Test/Reset button is pressed the unit will announce CO PREVIOUSLY DETECTED. If the alarm has detected abnormal levels of smoke since its last test, it will produce three rapid beeps.
  • Carbon Monoxide Warning: Four short alarm beeps followed by a verbal warning WARNING! CARBON MONOXIDE! This continues until the unit is reset or the CO is eliminated.

Fire warning: the red led will flash and be accompanied by three long alarm beeps followed by a verbal warning message fire! fire! . the alarm will repeat pattern until unit is reset or smoke is eliminated. Alarm memory: the green led will blink once every 16 seconds to alert a user when the unit has alarmed for smoke or has detected a concentration of co. if the alarm has detected a co level of 100ppm or greater, when the test/reset button is pressed the unit will announce co previously detected. if the alarm has detected abnormal levels of smoke since its last test, it will produce three rapid beeps. Low battery warning: one chirp followed by warning low battery. the red led light will flash. this pattern will continue every minute for the first hour. after the first hour the red led light will flash once every minute accompanied by the chirp sound. the low battery warning will only sound once every fifteen minutes. voice hush indication: hush activated and hush cancelled voice announcement Carbon monoxide warning: four short alarm beeps followed by a verbal warning warning! carbon monoxide! this continues until the unit is reset or the co is eliminated.

5
8.8
SCORE
Kidde i4618 Firex Hardwire Ionization Smoke Detector with Battery Backup (6 Pack)

Kidde i4618 Firex Hardwire Ionization Smoke Detector with Battery Backup (6 Pack)

by Kidde
What We like

Interconnects with other compatible Firex smoke alarms and heat alarms

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Product Features

  • Front loading battery door makes battery changing simple, power link tab makes installation faster
  • False alarm control quiets unwanted alarms for up to 8 minutes
  • Red LED flashes until reset for quick, clear identification of initiating smoke alarm in interconnected system
  • Visible low battery indicator helps locate chirping unit

Visible low battery indicator helps locate chirping unit Front loading battery door makes battery changing simple, power link tab makes installation faster Red led flashes until reset for quick, clear identification of initiating smoke alarm in interconnected system False alarm control quiets unwanted alarms for up to 8 minutes

6
8.6
SCORE
First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide (CO) Detector with 10 Year Sealed Battery Backup

First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide (CO) Detector with 10 Year Sealed Battery Backup

by First Alert
What We like

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

more infoarrow_drop_down

Product Features

  • 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)
  • 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
  • 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 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 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) 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

7
7.8
SCORE
Kidde i4618 Firex Hardwire Ionization Smoke Detector with Battery Backup (8 Pack)

Kidde i4618 Firex Hardwire Ionization Smoke Detector with Battery Backup (8 Pack)

by Kidde
What We like

Interconnects with other compatible Firex smoke alarms and heat alarms

more infoarrow_drop_down

Product Features

  • Front loading battery door makes battery changing simple, power link tab makes installation faster
  • False alarm control quiets unwanted alarms for up to 8 minutes
  • Visible low battery indicator helps locate chirping unit
  • Red LED flashes until reset for quick, clear identification of initiating smoke alarm in interconnected system

False alarm control quiets unwanted alarms for up to 8 minutes Visible low battery indicator helps locate chirping unit Front loading battery door makes battery changing simple, power link tab makes installation faster Red led flashes until reset for quick, clear identification of initiating smoke alarm in interconnected system

8
7.4
SCORE
Kidde 21026063 AC Hardwired Smoke Detector Alarm with 9V Back up and Front Load Battery Door (Pack of 4)

Kidde 21026063 AC Hardwired Smoke Detector Alarm with 9V Back up and Front Load Battery Door (Pack of 4)

by Kidde
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9
7.4
SCORE
Kidde - 21026045 AC Hardwired Wireless Interconnect Smoke Detector Alarm | Model RF-SM-ACDC

Kidde - 21026045 AC Hardwired Wireless Interconnect Smoke Detector Alarm

Model RF-SM-ACDC

by Kidde Safety
What We like

Two universal adapters are included, allowing it to be used with most existing interconnected systems

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Product Features

  • When one alarm sounds, they all do: wireless technology uses radio frequency to both transmit and receive messages about a hazard in the home
  • Makes it easy to expand the coverage of a current interconnected system
  • AC power with battery backup enables homeowners to expand a current interconnected system.Temperature Range:40F (4.4C) to 100F (37.8C)
  • Wireless interconnect is compatible only with other RF-SM-DC models; or with other RF-SM-ACDC by leaving the red wire disconnected
  • Smart touch button quickly and temporarily silences nuisance alarms. Power Source - 120VAC; 9V battery backup. Audio Alarm- 85dB at 10ft

Ac power with battery backup enables homeowners to expand a current interconnected system.temperature range:40f (4.4c) to 100f (37.8c) When one alarm sounds, they all do: wireless technology uses radio frequency to both transmit and receive messages about a hazard in the home Smart touch button quickly and temporarily silences nuisance alarms. power source - 120vac; 9v battery backup. audio alarm- 85db at 10ft Wireless interconnect is compatible only with other rf-sm-dc models; or with other rf-sm-acdc by leaving the red wire disconnected Makes it easy to expand the coverage of a current interconnected system

10
7.4
SCORE
Kidde Smoke and Carbon Monoxide Detector Alarm with Voice Warning | Hardwired w/10 Year Lithium Battery Backup | Interconnectable | Model # i12010SCO, White

Kidde Smoke and Carbon Monoxide Detector Alarm with Voice Warning

Hardwired w/10 Year Lithium Battery Backup, Interconnectable, Model # i12010SCO, White

by Kidde
What We like

Hush feature - Temporarily silences nuisance alarms for approximately 9 minutes and will not allow hush mode unless the unit is in alarm mode. Interconnects - Up to 24 Kidde devices (of which 18 can be initiating).Flashes once every 60 seconds to indicate battery only mode

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Product Features

  • Voice warning system - Verbally announces Fire or Warning, Carbon monoxide to help distinguish between threats. Audio alarm: 85 dB at 10 feet
  • Ionization sensing technology - Ideal for detecting fast flaming and other types of fires. Temperature Range: 40 degree F (4.4 degree C) to 100 degree F (37.8 degree C)
  • Compatible with Kidde, FireX, code one and sentinel products
  • Provides protection from two hazards - Fire and CO in one unit with 10-year sealed lithium battery backup.

Voice warning system - verbally announces fire or warning, carbon monoxide to help distinguish between threats. audio alarm: 85 db at 10 feet Ionization sensing technology - ideal for detecting fast flaming and other types of fires. temperature range: 40 degree f (4.4 degree c) to 100 degree f (37.8 degree c) Provides protection from two hazards - fire and co in one unit with 10-year sealed lithium battery backup. Compatible with Kidde, firex, code one and sentinel products

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