Features: High-precision gas sensor for accurate and reliable gas leak detection, fast response-time. Detects large numbers of flammable gases, like methane, natural gas, propane, butanes, ethane, etc. This gas analyzers pen will send out visual and audible alarm if any combustible gas isdetected. Portable pen type design-, compact- and lightweight, easy to carry and operate. Take this handheld detector in the area where you think there might be aleak and wait for the device to display the current gas levels. Specifications: Material: plastics Size: approx170x28mm/7x1-inch(HT59), 158x28mm/6x1-inch Type: HT59/HT60(optional) Measuring range: 0-1000PPM Pre-heating: 30 seconds Note: Please allow 1-3cm error due to manual measurement. please 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. Package includes: 1x Gas Leak Detector