How to choose A Gas Sensor

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All gas sensors.png

If you search "gas sensor" on www.seeedstudio.com , you can find a lot of gas sensor. We know that the air component is diverse, and a certain gas sensor can detect one or more air components, so we designed a series of gas sensor.

There are about 10 kind of gas sensor for sale. They have similar name, it's likely to cause confusion. Hope that through the following presentation, we can help you to choose the appropriate gas sensor easily.

It's obvious that different sensor can detect the same gas. Such as MQ-2, MQ-3, MQ-5, Alcohol Sensor, Grove – HCHO Sensor can detect Alcohol. So if you want an alcohol sensor, then which on should you chosen? Although most of the above sensors are able to detect Alcohol, but you should know that they have different range to Alcohol.


Gas Range Price Product Name SKU
CO 200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
0.05 ~ 10 ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ5) 101020056
20 ~ 200 ppm $7.5 Grove - Gas Sensor (MQ9) 101020045
0 ~ 1000 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
Alcohol 100 ~ 2000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
0.05 ~ 10 ppm ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ5) 101020056
20 ~ 1000 ppm $7.9 Grove - Alcohol Sensor 101020044
10 ~ 500 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
Propane > 1000 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
200 ~ 5000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
CH4 5000 ~ 20000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
0.05 ~ 10 ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ5) 101020056
500 ~ 10000 ppm $7.5 Grove - Gas Sensor (MQ9) 101020044
>1000 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
O2 0 ~ 25% VOL $59 Grove - Gas Sensor (O2) 101020002
HCHO 5 ~ 40 ppm $14.9 Grove - HCHO Sensor 101020001
Dust 0 ~ 8000 pcs/0.01cf $15.9 Grove - Dust Sensor 101020012
LPG 200 ~ 5000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
0.05 ~ 10 ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
20 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ5) 101020056
500 ~ 10000 ppm $7.5 Grove - Gas Sensor (MQ9) 101020045
Butane 3000 ~ 5000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
Hexane 0.05 ~ 10 ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
Benzine 0.05 ~ 10 ppm $6.9 Grove - Gas Sensor (MQ3) 101020006
Smoke 200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
NO2 0.05 ~ 10 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
H2 300 ~ 5000 ppm $6.9 Grove - Gas Sensor (MQ2) 101020055
200 ~ 10000 ppm $6.9 Grove - Gas Sensor (MQ5) 101020056
1 ~ 1000 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
NH3 1 ~ 500 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
Iso-butane > 1000 ppm $39.9 Grove - Multichannel Gas Sensor 101020088
CO2 0 ~ 2000 ppm $99.9 Grove - CO2 101020067


And sometimes, we want to test many gases in one sensor, so how should we choose it ?

Gas SKU Price Measurable Gases Range
Grove - Multichannel Gas Sensor 101020088 $39.9 CO 0 ~ 1000 ppm
Alcohol 10 ~ 500 ppm
CH4 > 1000 ppm
Propane > 1000 ppm
NO2 0.05 ~ 10 ppm
NH3 1 ~ 500 ppm
Iso-butane > 1000 ppm
H2 1 ~ 1000 ppm
Grove - Gas Sensor (MQ2) 101020055 $6.9 CO 200 ~ 10000 ppm
Alcohol 100 ~ 2000 ppm
CH4 5000 ~ 20000 ppm
Propane 200 ~ 5000 ppm
LPG 200 ~ 5000 ppm
Butane 3000 ~ 5000 ppm
Smoke 200 ~ 10000 ppm
H2 300 ~ 5000 ppm
Grove - Gas Sensor (MQ3) 101020006 $6.9 CO 0.05 ~ 10 ppm
Alcohol 0.05 ~ 10 ppm
CH4 0.05 ~ 10 ppm
Hexane 0.05 ~ 10 ppm
LPG 0.05 ~ 10 ppm
Benzine 0.05 ~ 10 ppm
Grove - Gas Sensor (MQ5) 101020056 $6.9 CO 200 ~ 10000 ppm
Alcohol 200 ~ 10000 ppm
CH4 200 ~ 10000 ppm
LPG 200 ~ 10000 ppm
H2 200 ~ 10000 ppm
Grove - Gas Sensor (MQ9) 101020045 $7.5 CO 20 ~ 2000 ppm
CH4 500 ~ 10000 ppm
LPG 500 ~ 10000 ppm
Grove - Dust Sensor 101020012 $15.9 Dust 0 ~ 8000 pcs/0.01cf
Grove - Alcohol Sensor 101020044 $7.9 Alcohol 20 ~ 1000 ppm
Grove - Gas Sensor (O2) 101020002 $59 O2 0 ~ 25% VOL
Grove - HCHO Sensor 101020001 $14.9 HCHO 5 ~ 40 ppm
Grove - CO2 101020067 $99.9 CO2 0 ~ 2000 ppm


Choose the one you needed!

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