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.
SPECIFICATION
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
Size: 36.4x26.6mm
SHIPPING LIST
Analog Gas sensor (MQ3) x1
Analog Cable x1
Acrylic Base(with nylon screws) x1
IMPROVEMENT LIST
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)
