The Best Smoke Detector Reviews of 2021 – Top 10 and Rankings

If you’re looking for Smoke Detector Reviews but don’t know which one is the best, we recommend the first out of 10 Smoke Detector Reviews in this article. Check out how we decide after hours of researching and comparing dozens of items on the market.

SaleRank No. #1
First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White
  • 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
Rank No. #2
First Alert SA303CN3 Battery Powered Smoke Alarm with Silence Button, 1 pack
  • 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
SaleRank No. #3
Kidde Sealed Lithium Battery Power Smoke Detector Alarm | Model i9010
  • Sealed-in lithium battery – Sealed-in lithium power supply; No battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm
  • Self-activation – Alarm automatically activates when attached to the mounting bracket, HushTM – Will temporarily silence nuisance alarms and will not allow hush mode to be activated unless the unit is in alarm mode
  • Alarm memory – Rapidly flashing LED alerts user if the alarm has sounded since the last time the test/reset button was used. Temperature Range-40˚F (4.4˚C) to 100˚F (37.8˚C)
  • End of life warning – Alarm chirps every 40-45 seconds indicating the alarm is in need of replacement, tamper resist – (when activated upon installation) effective in preventing someone from removing the unit from the mounting bracket
  • Test/reset button – Tests unit’s circuit operation and resets memory after an alarm condition occurs, LED – A flashing red indicator light with four modes of operation: Standby, alarm mode, hush mode, and memory set
Rank No. #4
First Alert BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack
  • 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
SaleRank No. #5
Kidde AC Carbon Monoxide Detector Alarm | Plug-In with Battery Backup | Model KN-COP-DP2
  • Tamper resist feature – Can be activated to cause unit to go into alarm if it has been unplugged or has come loose from the outlet
  • 2 LED’s: Red - Illuminates when in alarm mode. Green – AC power is present, normal operation
  • Test/reset button: Tests CO alarm circuit operation and allows you to immediately silence the alarm
  • End of life alarm: Alerts user to replace CO alarm after 10-years of operation
  • Provides peace of mind against the silent killer; Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C)
SaleRank No. #6
First Alert Z-Wave Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm, 2nd Generation
  • Help keep your family safe with this battery-powered smoke detector and carbon monoxide alarm; includes 2 AA batteries
  • This device is certified to work with Ring; Enjoy improved compatibility, easier setup and a seamless in-app experience
  • Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected
  • 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
  • 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)
SaleRank No. #7
First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Photoelectric Sensor
  • 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
Rank No. #8
First Alert 3120FF Dual Sensing Alarm Smoke Detector, 1 Pack
  • Hardwired alarm includes battery backup for power outages
  • Photoelectric and ionization sensors provide comprehensive fire detection
  • A single button makes alarm easy to test monthly or silence during a false alarm. Temperature Range: 40°F (4°C) to 100°F (38°C)
  • Two latching features help indicate a low battery or the originating alarm in a system
  • Optipath 360 patented technology provides 360 degrees of access to the smoke alarm. Emits T3 Pattern
Rank No. #9
Kidde 21026043 Battery-Operated (Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA
  • 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 the 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 100 ppm 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
SaleRank No. #10
First Alert Slim Photoelectric Smoke Alarm with 10-Year Sealed Battery, PR710
  • Complies with all current 10-year legislation in U.S. states/cities where required
  • Slim shape is half as thick as a standard smoke alarm; easy twist-lock mounting system and tamper-resistant design
  • Equipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms
  • Patented smoke entry system allows for a direct path to the sensor
  • Features loud 85-decibel alarm and single test/silence button

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