The MQ5 is used in gas leakage detecting equipments in consumer and industrial applications , this sensor is suitable for detecting LPG, natural gas and coal gas. The sensitivity can be adjusted by using the potentiometer.Specifications

• Power supply needs: 5V
• Interface type: Analog
• Pin Definition: 1-Output 2-GND 3-VCC
• High sensitivity to LPG, natural gas, town gas
• Small sensitivity to alcohol, smoke
• Fast response
• Stable and long life
• Simple drive circuit
• Size: 40x20mm