The CO Guardian AERO 455-101-001 is aviation's first built-in pulse oximeter for aircraft panels. This certain unit is designed for any aircraft, including those with limited panel spacing. The quaint pulse Oximeter from CO Guardian with CO Detector mounts easily within most panels and can transmit data to the MFD's through RS-232.The Life Guardian Aero-455 transmits the pilot's blood oxygen levels, heart rate statistics, CO level, cabin temperature, and cabin altitude to the MFD's display units. How the pilot goes about testing is placing his/ her index finger within the unit, and he/ she will quickly get readouts so they can determine their general physical and environmental well being. This certain unit is capable of reminding the pilot when he/ she passes 10K and every half an hour above 10K.