DIY Frequently Asked Questions / Ionization Fire Detector')">
Measures the changes in electric current caused by invisible particles ionized in the heat of combustion.
Transforms air inside the detector into a conductor of electric current. When smoke enters the detector and impedes the flow of current, the alarm sounds.
Responds particularly well to the smoke caused by a flaming fire.
Requires little power and is effectively powered by household batteries.
Slower to respond to a smoldering fire.
Detectors are required to emit a low warning when batteries are weak.
DIY Frequently Asked Questions / Ionization Fire Detector')">
Measures the changes in electric current caused by invisible particles ionized in the heat of combustion.