The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.
Notice:The new version of analog sensor port pin mapping has been changed as the following two features.Please check the tips for changing sensor cable pin mapping while using the I/O Expansion shield. We will continue to update. For the inconvenience caused, please understand.
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
Analog Gas sensor (MQ3) x1
Analog Cable x1
Acrylic Base(with nylon screws) x1
Standard assembling structure (Times-of-5mm Center distance between four 3mm mounting holes)
Easily recognitive interfaces of sensors ("A" for analog and "D" for digital)