Product DescriptionOverview· Sensitive for alcohol, ethanol· Output voltage boosts along with the concentration of the measured gases increases· Fast response and recovery· Adjustable sensitivity· Signal output indicatorSpecifications· Power: 2.5V ~ 5.0V· Dimension: 40.0mm * 21.0mm· Mounting holes size: 2.0mmApplications· Car alcohol alarm· BreathalyserHow to UseIn the case of working with a MCU:· VCC ? 2.5V ~ 5.0V· GND ? power supply ground· AOUT ? MCU.IO (analog output)· DOUT ? MCU.IO (digital output)