MQ-136 Hydrogen Sulfide Gas Detection Sensor Module

Hydrogen sulfide (H2S) is a colorless gas popular for its pungent rotten egg odor at low concentrations. Hydrogen sulfide is produced in several industries like in Oil and gas refining, Mining, Pulp and paper processing, tanning, etc. However, it is harsh for humans at moderate or low concentrations. For example, it causes severe respiratory issues, like coughing, breathing difficulty, fluid in the lungs, etc. It can also cause eye irritation, dizziness, vomiting, nausea, headache, etc. So, the measurement of the concentration level is necessary for this gas. Thus, MQ136 got invented.