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Alcohol Gas Detection Sensor Module MQ-135 For Arduino

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Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist.The sensors conductivity is more higher along with the gas concentration rising. MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases.


  1. Sensitive for benzene, alcohol, smoke
  2. Output voltage boosts along with the concentration of the measured gases increases
  3. Fast response and recovery
  4. Adjustable sensitivity
  5. Signal output indicator
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