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Best Reviewed

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Recommended As
Pros and Cons
Sources
Amazon Rating

(average)

Where To Buy
 
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Features
Type
Smoke sensor
Audio alarm
Power source
Interconnects
Warranty
Sensor lifespan
Display
Test/silence button
Features
Visual indicators
 
  • image
    Pros: interconnected alarm, no wiring required, voice announcements, varying frequency tone easier to hear for those with hearing loss
    Cons: no display of CO levels
    not avail.
     
    Interconnected CO alarm
    N/A
    Spread spectrum horn tone, voice announcement
    Battery (included)
    Yes, wireless
    7-year limited
    7 years
    None
    Yes
    Programmable oice announcement, alarm latch, wireless interconnection, end of life signal
    Single LED
     
  • image
    Pros: versatile installation, battery backup, extremely loud horn, seven-year limited warranty
    Cons: cO level is not continuously displayed, does not interconnect with other CO detectors
    not avail.
     
    Stand-alone CO alarm
    N/A
    85-decibel horn
    120V AC with 2 AA battery backup (included)
    No
    7-year limited
    7 years
    Shows CO level during alarm, battery level and peak CO level
    Yes
    Front access battery compartment, low battery alert, end-of-life alert, 6-foot power cord
    LED light, LCD display
     
  • image
    Pros: interconnects wirelessly, easy to install, very sensitive to smoldering fires, voice warning
    Cons: no digital display, not sensitive to flaming fires
    not avail.
     
    Interconnected CO and smoke alarm
    Photoelectric
    Siren, voice announcement
    Battery (included)
    Yes, wireless
    7-year limited
    7 years
    None
    Yes
    Programmable oice announcement, wireless interconnection, end of life signal
    LEDs
     

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