Plug in Closet and Travel Air Purifier. They provide NO protection against Carbon Monoxide which is produced as a by-product of incomplete combustion of fossil fuels. Click here for the companion CO detector. Unlike some combustible gas detectors, this unit does NOT directly plug into a wall outlet. Instead it has a 65 inch cord to allow for proper mounting of the detector so that the appropriate gas can be more quickly detected.
Propane is heavier than air.
The detector should be mounted within 4 to 20 inches of the floor if it is being used to detect propane gas. Mount the detector within 6 inches from the ceiling or on the ceiling at least 12 inches from a wall. This unit also detects acetone, alcohol, butane, and gasoline, all of which you may have in your home. DO NOT install within 12 inches of exterior doors, windows, heating or cooling return cents, or other drafty areas or corners. DO NOT install in or on outside walls or within 12 inches of corners.