Highly sensitive wide range gas detector. Detect methane, natural gases, coal gases, hexane, propane, ethane, Butane, pentane, isopropyl alcohol, halogenation hydrocarbon, (Methanol, Ethanol, Butanol) aether, ketone (butone, protone), Hydrogen, toluene, and other compounds, (gasoline, industrial solvent, lacquer, refrigerant, sulfur dioxide, ammonia, sulfured hydrogen, acetic acid, etc). Quick response. 3-color leak indication. LED and audio indication. Gas concentration alarm. Adjustable sensitivity. Gas sensitivity: 50 ppm-100 percent LEL (Lower Explosive Limit). Startup time: less than 30 sec. Response time: less than 3 sec. Visual LED displays 10 levels for each of 3 gas ranges: Green for low levels. Yellow for moderate. Red for dangerous levels. Operating Conditions: -4 F to 140 F, less than 98 percent RH. Low power warning. Size: 170 mm x 62 mm x 26 mm. Includes batteries.