Gas detectors are necessary to reduce accidents caused by “gas” used in the field of any industry or to reduce the risk of occurrence.
The danger posed by gas can not be prevented with human power.
There are gases with color and smell, but if not, people are exposed to gas without knowing it.
Some of the gas detectors detect danger by detecting these gases because there are dangerous gases that cause severe adverse effects on the human body even if a little aspiration is done.