From ASA, a Carbon Monoxide Detector that can save a pilot’s life, especially when flying with the heater on, by warning of the presence of CO in the cockpit.  The spot will turn gray/black when CO is in the air.  The spot on the detector returns to normal color after it is exposed to fresh air.  You can use this CO-DETECTOR as your personal and portable CO detection device.  With the adhesive back, stick it on the panel or dash for a semi-permanent installation, or wear it on an ID badge or on a lanyard.  Unopened CO-Detectors have a shelf life of 3 years, indicated by the expiration date on the package.  Once removed from the packaging, the CO-Detector will last for 12 months.  Can be used on planes, cars, fuel trucks, tugs, campers etc.  1122

Meets standard  NSN 4910-01-129-7273.