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MG811 Module, Air Carbon Dioxide/CO2 SensorFeatures-Wide detecting scope.High sensitivity & stability.Simple drive circuit.Digital output: Active ..

MH-Z19 Infrared CO2 Sensor Module for CO2 monitorFeatures-High sensitivity, high resolution.Low energy consumption.Output mode: UART and PWM wave.Temp..

MQ 135 Air Quality/Gas Detector Sensor Module For ArduinoFeatures-Sensitivity to Ammonia, Sulphide, and Benzene steamWith signal output instructionsTh..

MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector ModuleFeatures-Good sensitivity to Combustible gas in a wide rangeHigh sensitivity to LPG, Propane,..

MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor ModuleFeatures-Signal output indicatorDual Signals output (analog output and TTL output)The TT..

MQ-5 Methane LPG Liquid Propane Gas Sensor ModuleFeatures-High sensitivity to LPG, natural gas, town gas.Small sensitivity to alcohol, smoke.Stable an..

MQ-6 Liquefied Petroleum Isobutane Propane Gas Sensor moduleFeatures-Good sensitivity to Combustible gas in a wide rangeHigh sensitivity to Propane, B..

MQ-7 CO Carbon Monoxide Coal Gas Sensor ModuleFeatures-The analog output voltage, the higher the concentration the higher the voltage.The carbon monox..

MQ-8 Hydrogen Gas Sensor Module H2 Alarm DetectionFeatures-Using the high-quality dual-panel design, with power indicator and TTL signal output instru..

MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor ModuleFeatures-Good sensitivity to CO/Combustible GasHigh sensitivity to Methane, Propane, and COLon..

SeeedStudio Grove Gas Sensor(MQ9)Features-High sensitivity to Combustible gas in a wide rangeStable performance, long life, low costFast responseWide ..

SeeedStudio Grove Temperature, Humidity, Pressure and Gas SensorFeatures-4-in-1 multiple measurements: Temperature, Humidity, Pressure, GasLow po..