Gas Sensor MQ136 Hydrogen Sulfide Gas Sensor H₂S Concentration Sensor Hydrogen Sulfide Probe H₂S Gas Detection Module

Ultra‑Sensitive MQ136 H₂S Gas Detection Module – Rapid, Reliable Hydrogen Sulfide Monitoring

The MQ136 module is a compact metal‑oxide semiconductor sensor specifically tuned for hydrogen sulfide (H₂S) detection. Mounted on a probe with protective alumina housing, it delivers an analog voltage proportional to H₂S concentration in the 10–1000 ppm range. Designed for harsh industrial environments, the MQ136 offers high selectivity for H₂S over common interferents such as CO₂ and NH₃, ensuring accurate readings even in complex gas mixtures.

Key technical merits include a rapid 5‑second response time at 100 ppm, low power consumption (≈35 mA at 5 V), and built‑in temperature compensation for stable performance across -10 °C to 50 °C. The module’s analog output can be directly interfaced with ADCs, microcontrollers, or industrial safety relays, making it ideal for real‑time monitoring, alarm systems, and data logging applications.

• Detection Range: 10–1000 ppm H₂S (at 5 V supply)
• Response Time: ≤5 s at 100 ppm (rise time), 10–15 s for saturation
• Power Requirements: 3.3 V/5 V DC, 35 mA typical
• Common Use Case: Industrial safety monitoring in wastewater plants, oil & gas pipelines, refineries, and laboratories—providing fast, reliable alerts for H₂S exposure.