The Quantum Eye® is a multi-level Carbon Monoxide Detector. It provides a visual indication of carbon monoxide contamination. Each detector is packaged in a protective bag that when opened activates the product. Once activated the maximum product lifetime is 18 months. Operating temperature range is from 41° to 100° F, relative humidity (RH) ranges from 25 to 90% RH. These CO detectors have a 3 year shelf life as long as they are sealed in AVCSystems' factory. For airplane and campground use