Hydrogen Sensor MQ8 (Digital/Analog)

From the shop's description

This sensor has a high sensitivity and fast response time. It is suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm. The sensor can output an analog or digital signal. The sensitivity can be adjusted by the potentiometer. They are used in gas leakage detecting equipments in home and industry applications. Specification Power supply needs: 5V Interface type: Analog/ Digital Pin Definition: 1-GND 2-Digital Output 3-Analog Output 4-VCC High sensitivity to Hydrogen (H2) Small sensitivity to alcohol, LPG,cooking fumes Stable and long life Size: 40x20mm ​​