GAS SENSOR MODULE MQ-2 For Arduino Smoke Detection

Arduino MQ2 Gas Module

Smoke Detection

Sensitive gas : Liquefied gas, propane and
hydrogen

Operating principle:
MQ-2 gas sensor applies SnO2 which has a lower conductivity in the clear
air as a gas-sensing material. In an atmosphere where there may be
inflammable gases, the conductivity of the gas sensor raises along with the
inflammable gas concentration increases. MQ-2 performs a good
detection to different inflammable gases such as natural gas, especially
sensitive to liquefied gas, propane and hydrogen. Its ability to detect
various inflammable gases and lower cost make it an ideal choice of
different applications of gas detection.

Applications
This module can be applied to household or industrial gas leakage
detection devices.


Sensor Name Gas to measure
MQ-2 Methane, Butane, LPG, Smoke
MQ-3 Alcohol, Ethanol, Smoke
MQ-4 Methane, CNG Gas
MQ-5 Natural gas, LPG
MQ-6 LPG, butane
MQ-7 Carbon Monoxide
MQ-8 Hydrogen Gas
MQ-9 Carbon Monoxide, flammable gasses
MQ131 Ozone
MQ135 Air Quality
MQ136 Hydrogen Sulphide gas
MQ137 Ammonia
MQ138 Benzene, Toluene, Alcohol, Propane, Formaldehyde gas, Hydrogen
MQ214 Methane, Natural Gas
MQ216 Natural gas, Coal Gas
MQ303A Alcohol, Ethanol, smoke
MQ306A LPG, butane
MQ307A Carbon Monoxide
MQ309A Carbon Monoxide, flammable gas