Elecfreaks PlanetX MQ2 is a smoke detection sensor and flammable gases designed for STEM training, robotics and IoT projects. It allows monitoring of air quality and detection of potentially dangerous concentrations of gases in study and experimental applications.The sensor recognizessmokeand differentflammable gases, includingpropane, butane (LPG), isobutan, methane, hydrogen, alcohol and flue-gas. When increasing the concentration of gas or smoke, the sensor output signal is increased, allowing easy reading and use in various automated systems.Thanks to modular design of the systemPlanetX, the sensor is easily integrated with other modules to create various projects. The color marking of the ports facilitates proper connection and makes working with it suitable for both beginners and advanced users.For the use of the sensor are necessaryNezha Expansion BoardandRJ11 cablewhich are offered separately. 
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