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About Carbon Monoxide

  A 10-Year CO Detector May Operate For Only One Year

A 10-year warranty does not always guarantee that a battery-powered CO detector will operate for more than 1 year:

  Limited operation between 68-86F may be required for full battery life.
  When the batteries die, they may not be replaced.
  If the batteries are removable, they may be pilfered for use in another device.
  If the batteries are non-removable, and not specifically covered by the warranty, the alarm will be discarded when the batteries die.
  Carbon monoxide is invisible and odorless. When CO is detected, and an alarm sounds, it may be misinterpreted as a low battery signal and a detector that is not properly secured may be removed and permanently disabled.

Many 10-year CO detector warranties do not include the batteries:
Two Removable AA Batteries
    "The manufacturer warrants to the original consumer purchaser, that this product (except batteries) will be free of defects in material and workmanship for a period of ten years from date of purchase. A good safety measure is to replace the batteries at least once a year."

Two Non-Removable AA Batteries
    Manufacturer "warrants this product to be free from defects in material and workmanship for a period of 10 (ten) years from the date of purchase. This warranty shall not apply to any damage which may be caused by the sealed batteries used in this product."

One Non-Removable Lithium Battery
    Manufacturer "warrants that for a period of ten years from the date of purchase, this product will be free from defects in material and workmanship." "The warranty does not cover acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included with this unit."

CO Alarm Features To Look For
  The CO alarm should be powered by at least two non-removable lithium batteries, and secured with a screw through the alarm into its mounting plate.
  The manufacturer's warranty should specifically guarantee that the factory batteries will power the CO alarm for at least ten years.

View the Defender CA6100 and CA6150 carbon monoxide alarm 10-year warranty.

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