Guardian Avionics Carbon Monoxide Detectors Model Aero-452 | Aircraft Spruce
GZAIR Carbon Monoxide CO Detector, Car, RV, Aircraft, Boat, Bus, Truck, Vehicle Automotive CO Gas Alarm, Portable CO Meter for Travel, Police, Pilots, Drivers, and Campers : Amazon.co.uk: DIY & Tools
904-0012-01 Quantum Eye Long Life (18 Month) CO2 Detector Miscellaneous Items