The Airspace AI-1100 Carbon Monoxide Gas Monitor is factory calibrated and designed to detect hazardous levels of potentially lethal carbon monoxide gas. The easy to use, long lasting, and life saving monitor detects CO gas using advanced Gas Sensor AGS Technology™. This technology is incorporated in the highly sensitive solid-state semiconductor sensor that responds quickly when detecting CO gas. With AGS Technology™, the sensor requires no routine calibration and comes with a full 5 year warranty. Made of rugged polycarbonate material, the AI-1100 CO monitor is lightweight and portable with various clip options and accessories. A free 30 day demo unit is available upon request.