Analog Gas Sensor(MQ4)

The MQ4 is used in gas leakage detecting equipment in consumer and industrial markets.
In stock

VEX Robotics parts ship from Texas

US Schools/School Districts can order by Purchase Order

This sensor is suitable for detecting CH4, natural gas, LNG. Avoid exposure to alcohol, cooking fumes, and cigarette smoke. The sensitivity can be adjusted by the potentiometer.


  • Analog Gas sensor (MQ4) 1 unit.
More Information
Data Sheets
  • Power supply needs: 5V.
  • Interface type: Analog.
  • Pin Definition: 1-Output 2-GND 3-VCC.
  • High sensitivity to CH4´╝îNatural gas.
  • Small sensitivity to alcohol, smoke.
  • Fast response.
  • Stable and long life.
  • Simple drive circuit.
  • Size: 40x20mm.