Carbon monoxide is a colorless, tasteless, odorless, and highly toxic gas. The Defender alarm uses sophisticated sensor technology to detect and record levels of CO.

You can monitor the current CO level in your home on a large, easy-to-read digital display. When dangerous levels of CO are present, a loud, audible alarm alerts you and your family automatically.

Standard Features
  • Monitors CO levels updating every 15 seconds
  • Uses highly sensitive, CO-specific electrochemical sensor
  • Detects and stores CO levels as low as 10 and as high as 999 parts per million (ppm)
  • Loud alarm notifications
  • Records peak and duration
  • Professional quality
  • Lithium-ion battery does not require replacement
  • Listed to UL 2034
  • 10-year factory warranty
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