MQ9 Carbon Monoxide Methane and LPG Gas Sensor

Description:

• The MQ9 sensor is its semiconductor sensing component, designed to react to the presence of carbon monoxide, methane, and LPG molecules in the air. 
• When air comes into contact with the sensing layer, it changes the resistance of the sensor, allowing you to measure the change and detect the presence of the gas.
• As these gasses interact with the sensor, changes in its electrical conductivity occur.
• The sensor converts these changes into analog signal, for detection of CO, methane, and LPG levels.
• Connecting the sensor to an analog-to-digital converter (ADC) on a microcontroller enables users to obtain digital readings of concentrations.
• There is a potentiometer on the sensor which allows users to adjust the sensitivity based on specific requirements.

Specification:

• High sensitivity to carbon monoxide and CH4，LPG. 
• Operating Voltage (VDC): 5
• Current Consumption(mA): 150
• Do output: TTL digital 0 and 1 (0.1 and 5V)
• Ao output: 0.1-0 .3 V (Relative to Pollution)
• Length (mm): 32
• Width (mm): 20
• Height (mm): 21.5
• Weight (gm): 7

Package Include:

1 x MQ9 Carbon Monoxide Methane and LPG Gas Sensor