This H2S Sensor with Waterproof Aviation Connector measures the hydrogen sulfide concentration, air temperature, and humidity and is widely used in monitoring air quality. And it comes with auto temperature compensation, this sensor ensures the accuracy of measurements regardless of the environmental changes. Hydrogen sulfide is the most common source of where the stinky smell came from in our daily life and it has a tremendous effect on our healthy life. Different levels of hydrogen sulfide make a different impact, for example, a small number of hydrogen sulfide only make you suffer from a bad smell. However, when one area concentrates a large amount of large hydrogen sulfide, it will hurt your olfactory system and poisoning will happen. There are different kinds of methods of producing hydrogen sulfide whether by humans or by nature. The excretion produced by the livestock farming industry, in the process or reserve excretion by livestock and recycling of the excretion will produce an enormous amount of ammonia gas. Heavy industry using energy also produces a lot of hydrogen sulfide, because the process of burning coal, fuel, and natural gases for making energy also produces a huge amount of hydrogen sulfide and faces the risk of improperly disposing of hydrogen sulfide.