Features:Carbon Monoxide Meter detecter can detect carbon monoxide concentration, observing concentration value all the time. It has quite clear large LCD screen and voice and light alarm indication, making sure that it can detect dangerous gas and inform operators of precautions under adverse situation. It is widely used in petroleum, chemistry, coal mine, metallurgy etc.Specifications:Gas Tested: CO In The AirMeasuring Range: 0-1000ppmResolution: 1ppmMinimum Reading: 1ppmBasic Error: +/-5%(f.s),+/-10ppmResponse Time: 60 SecondsSensor Type: Electrochemical CO SensorEnvironment Temperature Test Range: 0~50C; 32-122FStorage Environment: -10~80C; -14~176F; 10-75%RHPower: 2x1.5V AAA Batteries (NOT INCLUDED)Measurements: 135*55*30mmPackage included:1 x Carbon Monoxide Meter