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An analogue gas sensor module based on the MQ-2 sensor, part of the Octopus Electronic Bricks series for plug-and-play integration with Arduino and compatibl...

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An analogue gas sensor module based on the MQ-2 sensor, part of the Octopus Electronic Bricks series for plug-and-play integration with Arduino and compatible boards. Detects a wide range of combustible gases and smoke with high sensitivity and fast response time.

Detectable Gases

  • LPG, i-butane, and propane
  • Methane and hydrogen
  • Alcohol
  • Smoke

Key Features

  • Analogue Output – Connect directly to any analogue input pin
  • Adjustable Sensitivity – On-board potentiometer for threshold tuning
  • 5 V Power Supply – Standard operating voltage
  • 3-Pin Interface – S (Signal), V (VCC), G (GND)
  • Fast Response Time – Quick detection of gas changes
  • Dimensions – 38 × 27 mm

Ideal For

  • Gas leakage detection projects
  • Smoke alarm prototyping
  • Air quality monitoring

Jargon buster

Plain-language definitions for the technical terms used above.

potentiometer
A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
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