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OCTOPUS GAS Sensor (MQ3) is an alcohol-based sensor（MQ3） module electronic building blocks，MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration; it is with low cost and suitable for different application.
Power supply 5V
Interface type: Analog
High sensitivity to alcohol and small sensitivity to Benzine
Fast response and High sensitivity
Stable and long life
Simple drive circuit
Vehicel alcohol detector
Portable alcohol detector