The gas detector can continuously and quickly detect the gas concentration in the surrounding environment or enclosed space. The instrument has the advantages of fast response speed, high measurement accuracy, good stability and repeatability, and its overall performance ranks among the leading levels in China. The instrument casing is made of high-strength engineering plastic, with an exterior design and dazzling color combinations that redefine the detection method of gas concentration; In addition, the user-friendly interface and error recovery function provide users with a new experience of intelligent gas detectors.