Grove - Gas Sensor(MQ3)

SKU 101020006
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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$6.90 1 pcs
$6.21 10 pcs
$5.87 20 pcs
$5.52 50 pcs
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.
There are different gas detectors for sale, like  MQ2, MQ3, MQ5 and MQ9. Below is a contrast table of them.
Sysmbol MQ-2 MQ-3 MQ-5 MQ-9
Detect Gas Combustible Gas、Smoke Alcohol Vapor LPG, Natural Gas, Town Gas Carbon Monoxide, Coal Gas, Liquefied Gas
Detect Concentration 300-10000ppm 0.04-4mg/L Alcohol 300-10000ppm 10-1000ppmCO;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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★★★★★ Great bag
Purchased this for my 23 year old daughter in the butterscotch color. Great versatile color. She loves the size -- perfect for day or going out at night. Chain can be double to shorten for nighttime and left long to wear as a crossbody during the day.
September 2, 2013 by
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