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DSM501A PM2.5 Dust Sensor Module for Arduino, Air-ConditionersFeatures-PWM output modeCompact, lightweightEasy to installA single power supply..

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

SeeedStudio Grove Air quality sensor v1.3Features-Responsive to a wide scope of target gasesCost-efficientDurableCompatible with 5V and 3.3V..

HW-290/GY-87 10DOF MPU6050+HMC5883L+BMP180 3-axis Gyro + 3-axis Acceleration + 3-axis Magnetic Field + Air Pressure SensorFeatures-3-axis Gyro+Acceleration+Magnetic FielAir Pressure ModuleBuild-in ultra-low noise linear LDO voltage regulatorBuilt-in onboard filters, which reduce noise from motor and..

MH-Z19 Infrared CO2 Sensor Module for CO2 monitorFeatures-High sensitivity, high resolution.Low energy consumption.Output mode: UART and PWM wave.Temperature compensation, excellent linear output.Good stability...

MG811 Module, Air Carbon Dioxide/CO2 SensorFeatures-Wide detecting scope.High sensitivity & stability.Simple drive circuit.Digital output: Active low (When it outputs a low-level signal, the indicator LED will be on)Analog output: Two Range Options: 0 to 2V or 0V to 4V. The default is 0V to 2V D..