Features: Portable Size: This gases leak detector has a portable size and is easy to carry, you can put it into your bags to carry easily.Three Color Light Alarm: The green light on means slight gases leak, the orange color on means the moderate gases leakage and the red light on means severe gases leakage.Ambient Temperature & Humidity Measuring: This gases leak detector can not only detect the leakage gases for you, but show the temperature and humidity for you at the same time.Various of Combustible Gases Detection: This gases leak detector can detect a lot of flammables gases such as methane, CO, natural gases, propane and so on.Wide Applications: This gases leak detector can be widely used for pipeline leak detection, household daily maintenance, danger items storage warehouses and so on.Specifications:Combustible gases detection : 300~10000ppm(Reference medium is methane)Response sensitivity: 50ppmResponse time: 2s.Warm-up time: 30sAmbient temperature test:Ranges: -10~60(14~140)Accuracy: 0.1(0.2)Resolution: 0.1(0.2)Automatic shutdown: about 5 minutes: 2 * AAA batteries (NOT INCLUDED)Material: ABScolour: blackPackage Contents:1 x Gases Detector1 x English User Manual1 x Storage BagOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.