Mq-2 gas sensor using gas sensitive material is to be clean air in the lower conductivity of tin oxide (sno2). When the sensor when flammable gases are present in the environment in which the sensors conductivity with increasing concentration of combustible gas in the air increases. Use a simple circuit to convert the changes in conductivity and output signal that corresponds to the concentration of the gas. Mq-2 gas sensor higher sensitivity to liquefied petroleum gas, propane, hydrogen, detection of gas and other combustible vapors are ideal. This sensor can detect a variety of flammable gas, is a low-cost sensors for many applications. Character configuration. Good sensitivity to combustible gas in wide range. High sensitivity to lpg, propane and hydrogen. Long life and low cost. Simple drive circuit. Domestic gas leakage detector. Industrial combustible gas detector. Portable gas detector.

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