10 Best Smoke Alarms of August 2025

List of Top Rated Smoke Alarms from thousands of customer reviews & feedback.

Updated On Aug 2025

1,191 Reviews Studied

By Customer Ratings

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Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA Read Review

  • Voice Alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire ” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Combined Carbon Monoxide and Smoke Alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note : The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in Technical Specification for Manual.
  • Voice Announcements - Hush Feature temporarily silences nuisance alarms with “HUSH MODE ACTIVATED” and “HUSH MODE CANCELLED” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “CARBON MONOXIDE PREVIOUSLY DETECTED” to warn of the CO incident, when the Test/ Reset button is pressed. Temperature Range: 40˚F (4. 4˚C) to 100˚F (37. 8˚C). Voltage (volts): 4. 5

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First Alert Smoke Detector and Carbon Monoxide Detector Alarm | Battery Operated, SCO5CN Read Review

  • 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
  • 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)

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First Alert Battery Powered Smoke Alarm with Silence Button, SA303CN3 Read Review

  • Help keep your family safe with this battery powered smoke alarm featuring an ionization sensor for smoke detection; a loud 85 decibel alarm sounds when smoke levels are elevated
  • Ionization sensor is effective in recognizing smoke from flaming fires such as paper and grease fires
  • Battery operated alarm unit provides continuous monitoring even if there's a power failure; Plus, it's easy to install
  • Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • 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)

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3 Pack Fire Alarms Smoke Detector Battery Operated with Photoelectric Sensor and Silence Button, Travel Portable Smoke A... Read Review

  • ➤ Photoelectric Smoke Alarm Sensing Technology: A faster sensing technology at detecting the dangerous situation than ionisation alarms, red LED will flash and the alarm pattern will sound, Loud 85 decibel alarm with compensation design.
  • ➤Battery-Powered Smoke and Fire Alarm Detector: no wire needed,not Hardwired
  • ➤Test/Slience Button: Tests the unit for proper operation and resets the carbon monoxide alarm,Alarm Volume: Loud > 85dB(A) at 1 meters.Loud 85-decibel alarm is designed to be heard easily.Pls kindly press if false alarm.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket.No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Safety and 5 year Warranty: .Low battery signal lalarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm.If any problem,contact with us without hesitable,we will reply to you asap.

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First Alert BRK9120b6CP Hardwired Smoke Detector with Backup Battery Read Review

  • Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
  • 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
  • Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke 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 standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
  • 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)
  • Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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Kidde Model i9040 Battery-Operated Ionization sensor Compact Smoke Detector Alarm Read Review

  • Battery operated Ionization sensor compact smoke alarm
  • 9 volt battery, mounting hardware and installation guide
  • Four inch diameter discreet design
  • Test button tests unit's electronic circuitry horn and battery function
  • UL listed and is backed by a 3 year limited warranty
  • Easy installation
  • Battery operated 9V battery included
  • Test button tests unit's electronic circuitry horn and battery function
  • Four inch diameter discreet design. Audio Alarm- 85dB at 10ft. Temperature Range- 40˚F to 100˚F (4°C to 38°C).Humidity Range- up to 85% relative humidity (RH)
  • Battery operated 9V battery included
  • Test button tests unit's electronic circuitry horn and battery function
  • Four inch diameter discreet design
  • Easy installation
  • Meets the UL requirements and widely-accepted safety standards

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Kidde i12040 120v Ac/dc Smoke Alarm w/ Battery Back up Lot of 6 by KIDDE Read Review

  • Hush feature temporarily silences nuisance alarms
  • One touch test button tests unit's electronic circuitry
  • Battery backup 9V battery included
  • Tamper resist locking pin helps deter alarm tampering and theft
  • UL Approved

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Kidde Smoke and Carbon Monoxide Detector Alarm with Voice Warning | Hardwired w/10 Year Lithium Battery Backup | Interco... Read Review

  • Provides protection from two hazards - Fire and CO in one unit with 10-year sealed lithium battery backup.
  • Sealed-in lithium battery backup - No battery replacement required over the 10 year life of the alarm. Eliminates worry about removal or unauthorized deactivation of alarm.
  • 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)
  • 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
  • Compatible with Kidde, FireX, code one and sentinel products

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

  • 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)

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Kidde Worry-Free Smoke Alarm, 2 pk. Read Review

  • Install these Kidde Worry-Free Smoke Alarms to provide your home with reliable protection against smoke and fire. The alarms are equipped with sealed-in lithium batteries that are designed to last for the life of the alarms. Photoelectric sensors can detect fire particles, which are associated with slow, smoldering fires, quickly. Once the alarms are attached to the mounting brackets, they activate automatically for simple use. Product Features: Provides reliable protection Sealed-in lithium b