Multi-Gas Detector 3 Gas Brazil Detects Oxygen Combustible Hydrogen Sulfide 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 Housing Color Black Operating Temp Range -20 to +50 Degrees C (-4 to +122 Degrees F) Battery Life 8 to 13 hr. Display Alphanumeric LCD Height 5-1/8 In. Width 2-13/16 In. Depth 2 In.