MQ-9 CO Carbon Monoxide Methane Liquefied Gas Sensor Suitable for home or factory gas leakage monitoring devices.
MQ-7 CO Carbon Monoxide Coal Gas Sensor Module For home, carbon monoxide detection device environment.
MQ-6 Liquefied Isobutane Propane Sensor Module Suitable for domestic or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices.
MQ-5 Liquefied Gas Methane Gas Sensor Module Suitable for home or industrial on LPG, natural gas, coal gas monitoring devices
MQ-4 Natural Gas Methane Gas Sensor Module This sensor can detect many kinds of combustible gases, especially natural gas and it is a low cost sensor for many applications.
MQ-3 Alcohol Ethanol Detection Sensor Module
MQ-2 Smoke Gas LPG Butane Hydrogen Sensor Module
Hydrogen Gas Sensor - MQ-8 This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air.
Gravity: Analog Hydrogen Gas Sensor (MQ8) For Arduino This is an Arduino hydrogen gas sensor. It has high sensitivity to Hydrogen (H2) and less sensitivity to alcohol, LPG,cooking fumes.
MQ-8 Hydrogen Gas Sensor Module This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air.