The MQ-136 Gas Sensor is designed to detect the concentration of Hydrogen Sulfide (H2S) gas. This module simplifies the use of the MQ-136 sensor by providing both digital and analog outputs, making it easy to interface with microcontrollers, Arduino, and Raspberry Pi.
The sensor uses SnO2 as its sensitive material, which has low conductivity in clean air. When Hydrogen Sulfide gas is present, the sensor’s conductivity increases as the gas concentration rises.
By using a simple circuit, the change in conductivity is converted into an output signal corresponding to the gas concentration. The MQ-136 is highly sensitive to Hydrogen Sulfide and less sensitive to other combustible gases, making it a cost-effective solution for various applications.