The Alcohol 2 Click Board™ is a very accurate ethanol gas (alcohol) sensor Click Board™, equipped with the SPEC amperometric gas sensor which electrochemically reacts with the ethanol. It is supported by the LMP91000, a high-precision integrated analog front-end IC (AFE), perfectly suited for use in electrochemical sensing applications. The Click Board™ also provides the reference voltage required by the sensor and offers a choice between the analog output from the AFE IC buffered with the low noise op-amp, and digital output from the 12-bit SAR A/D converter.