Robodo MQ8 MQ-8 Hydrogen Gas Sensor Module for Arduino Gas Sensor module Electronic Components Electronic Hobby Kit

"This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm. This sensor has a high sensitivity and fast response time. Specification ? Gas sensitive material: SnO2 ? conductivity increase according to flammable gas concentration. With power and TTL signal output instruction ? With TTL output and AO analog output ? Effective signal is low level ? Analog output voltage: 0~5V ? Quick response recover. "