Kidde 120V Carbon Monoxide Alarm

Protect Yourself and Your Family From the Odorless Killer: Carbon Monoxide


What's special about these detectors?

  • Alerts you to the danger of carbon monoxide present in the environment possibly caused by gas appliances or even from fumes in your garage or chimney
  • Units interconnect with up to 24 other Kidde devices for a complete system that alerts you not only in the place where there is danger but throughout the home
  • The battery pull tab eliminates battery installation time and keeps the battery's longevity
  • Click for More Features

Kidde Carbon Monoxide Detectors are a vital part of your home's safety system. This essential device helps warn of carbon monoxide levels and is inter-connectable with other Kidde devices, such as smoke alarms and heat detectors on one wiring network.

Part #DescriptionPrice
KD-21006406Kidde AC Wire-In Carbon Monoxide Alarm
with Battery Back Up
  • Installations are a snap with the adjustable mounting bracket included with your detector and snap-on harness
  • Alarm has a sealed cover which prevents debris from entering and interfering with the sensor
  • Prevent battery theft with the tamper resistant feature
  • Battery backup included with these models so you sleep well knowing regardless of power you are protected
  • Test/reset button allows you to check that your unit is operating properly and silence it during a false or nuisance alarm
  • Alerts user to replace the CO alarm after 7 years of operation
  • Smart system allows you to pinpoint where the danger lies
  • UL rated 2034
  • Five year manufacturer warranty


  KD-2100646 KD-9000121
Power Source 120V AC, 9V Battery Backup 120V AC, 9V Battery Backup
Sensor Electrochemical Electrochemical
Audio Alarm 85dB at 10ft 85dB at 10ft
Temperature Range 40° F to 100° F 40° F to 100° F
Humidity Range 5% - 95% relative humidity 5% - 95% relative humidity
Size 5.75" Diameter x 1.8" Depth 5.75" Diameter x 1.8" Depth
Weight 1 lb 1 lb
Interconnect Up to 24 Kidde Devices Up to 24 Kidde Devices
LED Green, Normal
Red, Alarm
Amber, Initiation Alarm
Green, Normal
Red, Alarm
Amber, Initiation Alarm
Digital Display None Displays CO concentration in PPM, updating every 15 seconds
Image carbon monoxide alarm co alarm with digital display






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