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There are four screw holes for easy positioning
Has long service life and reliable stability
and TEC1-12708 variants to suit different cooling power and current requirements
The potentiometer can be rotated up to 300 degrees to provide a varying voltage that your microcontroller can read using an analog input
Analog output voltage with concentration
MQ4 Methane Gas Sensor rotary There are four screw holesMQ 4 gas sensor sensitive material used in clean air conductivity is lower in tin titanium dioxide (SnO2). If the sensor is present in the environment in which the flammable gas, the sensor's conductivity increases with the concentration of flammable gases in the air increases. With a simple circuit, the change in conductivity of the gas concentration can be converted with the corresponding output signal. MQ 4 methane gas sensor for high sensitivity,
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