3 Color Spot Carbon Monoxide Monitors Change Color When CO Gas Present Save NOW! We OVERSTOCKED: YOU SAVE! Passive CO monitor warning system for airplanes, cars, trucks, RVs. Check carbon monoxide levels . If a muffler leaks on a small prop plane, CO is introduced into the cockpit by the heater. This carbon monoxide detector changes color when exposed to CO, a deadly gas. The CoStar Quantum Eye Passive Carbon Monoxide Monitor is an inexpensive, non-mechanical passive carbon monoxide monitor . Not for use by color blind individuals. M inimum sensor life is 18 months from the time the package is opened. Unique Package : Remove from packaging: Sensor detection starts. Check Sensor Color Often to Protect Against Carbon Monoxide Poisoning While Flying, At Home Or On The Go. Mounting tape on back. Protective plastic covering: keeps sensor safe from accidental over spray from cleaning solutions or other potential contaminants. Biomimetic Technology: Responds to CO in a way similar to the human body. Operational Range: 41F to 100F, Sea Level to 15,000 ft. 25% to 38% Relative Humidity Rapid Sensor Regeneration: Caution=2 hours, Danger=8 Hours. Three Level Readings: Danger (Dark Blue ) = Evacuate! Caution (Green) = Ventilate! Normal (Yellow) OK The Inner Circle Indicates Air Quality. Designed for use in vehicles: Auto, Truck, RV, Boat, Aircraft Small Size: Business Card Size Sensor Type: Patented Passive CO Specific Biomimetric Sensor. After exposure to carbon monoxide, freshen the air. If the sensor has not been overexposed, it will regenerate to its original color and be ready to use again. Instructions: Remove from plastic bag to activate. Mount in readily visible location. Notice: Protect sensor from water, grease, solvents, dirt, cleaning solutions, and other contaminants which may destroy or shorten sensor life. Keep away from hot surfaces and direct sunlight. Keep out of the reach of children. Warning: Passive warning devices do NOT sound alarms and must be viewed to