The proliferation of handheld devices has led to developments in the field of gas sensors, detector, and analyzer, which has considerably widened the scope of application across multiple end-user segments. Due to their chemical composition and properties, metal oxide gas sensors are well-suited for a wide range of applications, including the detection of all reactive gases. Depending on the material used and the gases that need to be detected, typical operating temperatures range between 300°C and 900°C. Currently, some of the prominent companies are developing products across the detector, as well as the analyzer segment having application across clinical assaying, environmental emission control, explosive detection, agricultural storage, and shipping, along with workplace hazard monitoring.

In the recent years, the sales of internal combustion engines, which are the main source of environmental pollution, declined significantly, primarily due to the rising awareness regarding environmental pollution. The pollution caused by automotive had been increasing drastically, since the past few decades, and it is estimated that about 30% of air pollution is primarily due to automotive emission. Sudden increase in automotive pollution considerably impacted the environment, intensifying the threat of air pollution in most of the big cities around the world.