brand new and high quality Features: The combustible gas leak detector with visual leakage indicator, can detect gas leakage. All you need to know the high reliability testing instrument in the use of all kinds of refrigerants, alkanes, combustible gas and fuel oil is of for great value in the environment of universal instruments. Can be used to detect hydrocarbons (methane, natural gas, gas, ethane, propane, benzene, Acetylene, propane, N,N,N,n, Pentane, hexane, gas oil, toluene), halogenated hydrocarbons(methylchloride, methylene chloride, three chloride, vinyl chloride), alcohols(methanol, ethanol)etc. Features: Portable detector for detecting all combustible gas. Long flexible stainless probe reaches all areas. Audible semiconductor probe and auto fast warm-up. Instant response, pinpoint leak position and low battery indication. Frequency & visible leakage alarm indication and adjustable sensitivity. Compact size, light weight, easy to carry and operate. Specifications: Color: Red + Black Material: ABS Plastic Detection Gas: Combustible Gas Sensitivity: Variable, Minimum 50 PPM (methane) Alarm Mode: sound alarm and light alarm Response Time: Instantaneous Warm-Up Time: < 20 Seconds Battery Type: 3 * AA 1.5V Alkaline Batteries (NOT Included) Duty Cycle: 3 Years Response Time: Instantaneous Continuous Operation Time: 9 hours(slightly vary with working condition) Probe Length: 35.5cm / 13.98in Operating Temperature: 0~50, Relative Humidity 0~80% Storage Temperature: 10~60, Relative Humidity: 0~70% Item Size: Approx. 160 * 65 * 33mm / 6.30 * 2.56 * 1.30in (L * for W * H) Item Weight: Approx. 175g / 6.17oz Package Size: Approx. 23.5 * 14 * 4cm / 9.25 * 5.51 * 1.57in (L * for W * H) Package Weight: Approx. 214g / 7.56oz Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 * Combustible Gas Detector 1 * User Manuall