MQ9 MQ-9 Carbon Monoxide CO Alarm Combustible Gas Sensor Module

MQ9 MQ-9 Carbon Monoxide CO Alarm Combustible Gas Sensor Module

product description :

The gas-sensing material used in the MQ-9 gas sensor is tin dioxide (SnO2), which has a low electrical conductivity in clean air. (1.5V heating) detection of carbon monoxide, the conductivity of the sensor with the concentration of carbon monoxide gas in the air increases, high temperature (5.0V heating) detection of combustible gas methane, propane and cleaning of low-temperature adsorption of spurious gas. A simple circuit can be used to convert the change in conductivity to an output signal corresponding to the gas concentration. MQ-9 gas sensor for carbon monoxide, methane, liquefied petroleum gas with high sensitivity, this sensor can detect a variety of carbon monoxide and flammable gases, is a variety of applications for low-cost sensors.