This product can measure methane concentration within the range of 0 to 10% conveniently, quickly and accurately. The overall structure is lightweight, weighing only 0.55kg. Compared with traditional optical interference methane detectors, its weight has been reduced by 69% and its volume has decreased by 54%, making it easy to carry and operate. The light source uses LED technology, which has lower energy consumption, stable brightness, fast response speed and a longer lifespan. An innovative power management module is incorporated to monitor the battery level at any time, preventing the equipment from running out of power after entering the well. The light source status is independently controlled, and it can be continuously activated by a single click to complete the reading. After the reading is completed, the light source automatically turns off. It can also be operated to immediately shut down. This helps to save energy, reduce operation steps and intensity. An electric sampling pump can be optionally equipped to further optimize the operation process. One-click single-handed sampling can be achieved for enhanced detection efficiency.