Description
Gas and air quality sensor.
All models have both digital (over a threshold set by potentiometer) and analog outputs.
Some sensors appear different than the pictures.
Models:
MQ-2 Smoke Gas
MQ-3 Alcohol
MQ-4 Methane Gas
MQ-5 Methane Natural Gas
MQ-6 LPG Gas
MQ-7 Carbon Monoxide Gas
MQ-8 Hydrogen
MQ-9 Combustible Gas
MQ-135 Air Quality
