MQ136 H2S Sensor

Detects hydrogen sulphide, the gas responsible for the rotten-egg smell around sewers, septic systems and some industrial processes. It is genuinely dangerous: at higher concentrations it deadens the sense of smell, so people stop detecting it exactly when it becomes most hazardous. That is precisely why an electronic sensor is worth having. Provides analogue and adjustable digital outputs with the usual MQ warm-up requirement. Detects hydrogen sulphide, which deadens the sense of smell; Suits sewer, septic and industrial monitoring; Analogue output plus adjustable digital threshold; Stable long-term response