Toxic Gas Sensor （Model：MQ-7） Manual Version: 1.3 Valid from: 2014-05-01 Zhengzhou Winsen Electronics Technology Co., Ltd Carbon Monoxide Gas Sensor （Model：MQ-7B） Manual Version: 1.4 Valid from: 2015-03-10 Zhengzhou Winsen Electronics Technology Co., Ltd Grove - Gas Sensor (MQ2) User Manual It can detect H2, LPG, CH4, CO, Alcohol, Smoke, Propane. information about the MQ-2 sensor please refer to the datasheet. 7 Product Manual . DFR Series; SEN Carbon Monoxide Gas Sensor(MQ7) The MQ7 is a simple-to-use Carbon Monoxide (CO) sensor suitable for sensing CO concentrations The carbon monoxide detector is a semiconductor gas sensor tuned to detect carbon monoxide. Click to download the manualMQ-7 CO Carbon Monoxide Gas Sensor The MQ series of gas sensors use a small heater inside with an electro-chemical sensor. Introduction: How to Use MQ2 Gas Sensor - Arduino Tutorial. MQ-9 Semiconductor Sensor for CO/Combustible Gas Sensitive material of MQ-9 gas sensor is SnO 2, which with lower conductivity in clean air. It make Manuals and Curriculum. The MQ series of gas sensors use a small heater inside with an electro-chemical sensor. MQ-7. Sensitive for Carbon Monoxide Arduino CO Monitor Using MQ-7 Sensor. Technology Arduino by the_3d6 Follow. 21,386. 44. 161 . WARNING: SENSOR REQUIRES MANUAL CALIBRATION FOR ANY PRACTICAL USE. Carbon Monoxide (CO) Detection. Carbon monoxide Select a category below to view a specific model of System Sensor products.