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Description: 1. MQ-136 is a highly sensitive gas sensor module specifically designed for detecting Hydrogen Sulfide (H2S) gases. It operates on the principle of electrical conductivity and utilizes a metal oxide semiconductor (MOS) sensing element. 2. Detection Range: This sensor can accurately detect H2S concentrations ranging from 0 to 2,000 ppm (parts per million). It is highly sensitive, with a low detection limit of approximately 5 ppm. 3. Operational Conditions: The MQ-136 operates effectively in temperatures between 0°C and +60°C and relative humidity levels below 95%. Its working voltage ranges from 3V to 5V, making it ideal for a wide variety of applications. 4. Interface & Communication: This sensor module includes an analog output, allowing it to be directly interfaced with microcontrollers or data loggers through an analog input pin. It can also be used with various communication protocols like I2C and UART when paired with appropriate shields or interfaces. 5. Calibration: Periodi
| Specification | Details |
|---|---|
| Specification | Detail |
| Operating Voltage | 5V DC (recommended) 3.3V to 12V possible |
| Sensitivity | High sensitivity to hydrogen sulfide gas |
| Response Time | Around 10-15 seconds |
| Long-term Drift | ≤1% per month |
| Cross-sensitivity | Low cross-sensitivity to other gases |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Humidity Range | 10% to 80% relative humidity |
| Gas Concentration Range | 0-100 ppm H2S (parts per million) |
| Output Signal | Analog voltage output (0-5V DC) |
| Sensitivity Adjustable | Yes using potentiometer or I2C interface |
| Size and Weight | Small size typically around 20mm x 15mm weight around 10g |
