Grove - Gas Sensor(MQ9)
  • Grove - Gas Sensor(MQ9)

Grove - Gas Sensor(MQ9)

SKU 101020045
  • How to choose a gas sensor ?
  • The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry)
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    How to choose a gas sensor ?

    The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, somke and so on. Measurements can be taken as soon as possible based on its fast response time. Also the sensitivity can be adjusted by the potentiometer.

    Each Grove - Gas Sensor Kit consists of one gas sensor base and four detectors, including MQ2,MQ3MQ5 and MQ9. Below is a contrast table of them. You can switch the detector on the base according to specific target gases.


    Detect GasCombustible Gas、SmokeAlcohol VaporLPG, Natural Gas, Town GasCarbon Monoxide, Coal Gas, Liquefied Gas
    Detect Concentration300-10000ppm0.04-4mg/L Alcohol300-10000ppm10-1000ppmCO;100-10000PPm Gas



    • High sensitivity to Combustible gas in wide range

    • Stable performance, long life, low cost

    • Fast response

    • Wide detection range

    • Simple drive circuit

    For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.



    Hot-swapping the grove may lead to IC burnout, please turn off the power of main board before swapping grove.


    Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to ourforum.

    More information about gas sensor, please refer to this manual.

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    Questions and Answers


    What is the resistance of the trim pot on R1 of this board? Is this the same trim pot for the HCHO Sensor? I can't find the make or datasheet for this component, so any information would be helpful.

    Thank you!

    on Oct 19,2016
    Replyupvote ()

    So it looks like this is something like the Bourns 3362 trimpot,

    the marking on this indicates that it's a p103, meaning that it'

    on Oct 20,2016 10:51 AM
    Replyupvote ()
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