Multi-Gas Detector 4 Gas United Kingdom Detects Oxygen Combustible Hydrogen Sulfide Carbon Monoxide Sensor Range O2 0 to 30.0 Percent LEL 0 to 100 Percent 0 to 5.0 Percent v/v H2S 0 to 100 ppm CO 0 to 500 ppm Housing Color Yellow Operating Temp Range -20 to +50 Degrees C (-4 to +122 Degrees F) Battery Life 14 hr. Display Graphical LCD Height 5-1/8 In. Width 3-3/16 In. Depth 1-7/8 In. Includes Calibration Cap and Tubing Screwdriver Manual