Analog Gas Sensor (MQ2)

The analog gas sensor - MQ2 is used in gas leakage detecting equipments in consumer and industry markets, this sensor is suitable for detecting LPG, i-butane, propane, methane, alcohol, Hydrogen, smoke. It has a high sensitivity and fast response time. And the sensitivity can be adjusted by the potentiometer.

Notice: The new version of analog sensor port pin mapping has been changed as the following two features. Please check the tips for changing sensor cable pin mapping while using the I/O Expansion shield. We will continue to update. For the inconvenience caused, please understand.

Improvement List

• Standard assembling structure (Times-of-5mm Center distance between two 3mm mounting holes)
• Easily recognitive interfaces of sensors ("A" for analog and "D" for digital)
• Icons to simplely illustrate sensor function 
• High quality connector
• Immersion gold surface

Specification

• Power supply needs: 5V
• Interface type: Analog
• Wide detecting scope
• Fast response and High sensitivity
• Simple drive circuit
• Stable and long life
• Size:36.4x26.6mm

Shipping List

• Analog Gas sensor (MQ2) x1
• Acrylic  Base x1

Documents

• Wiki Doc 
• MQ2 datasheet 
• Schematic