The MQ2 gas sensor module is a smoke-sensitive product that can detect combustible gases such as methane, butane, propane, alcohol, and liquefied petroleum gas. There is a small heater and an electrochemical sensor inside the MQ series smoke detector. MQ2 gas sensor can detect a variety of gas concentrations from 200 to 10,000 ppm, suitable for indoor use at room temperature.

Smoke Sensor Module MQ-2

The sensor module has a digital pin that can detect specific gases even without a microcontroller. To measure the gas concentration in ppm, you can use the analog output of the sensor module, which works with TTL and 5V compared to most traditional microcontrollers. equal. The sensor has a built-in potentiometer, which can set the digital output threshold and control the overall sensitivity of the sensor.

Features of Smoke Sensor Module MQ-2

  • “Can detect Methane, Butane, propane and even Hydrogen gas
  • Fast response <10s
  • High sensitivity
  • Stable
  • Long life
  • Wide detection ranges from 200 to 10000ppm”

Specification Smoke Sensor Module MQ-2

  • “Operating voltage 5.0V±0.2V
  • Adjustable sensing resistance 2KΩ-20KΩ
  • Combustible gas detection with concentration 300-10000ppm
  • Heater Resistance 31Ω±3Ω (Room Temperature)
  • Heater consumption ≤900mW
  • Temperature Humidity 65%±5% RH”

Uses and Applications Smoke Sensor Module MQ-2

  • “Household gas leak detection
  • Compliant with safety standards
  • Portable gas analyzer
  • Air quality monitor
  • Hospital environmental compliance
  • Industrial fuel as a detector”

Pin Description Smoke Sensor Module MQ-2

  • Vcc Powers the module with the operating voltage +5V
  • Ground To connect the module to system ground
  • Digital output by setting a threshold value using the potentiometer
  • Analog Outputs 0-5V analog voltage based on the intensity of the gas “
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