ITEM NAME:MQ-2 MQ2 Gas Sensor Module Smoke Methane Butane Detection for Arduino Z a.imagelink a:hover.imagelink {color:#db3606;.The gas, natural gas, city gas, smoke better sensitivity. Chip: LM393, ZYMQ-2 gas sensors. rapid response and recovery characteristics. TTL output. dual signal output (analog output, and TTL level output).
