MQ5 Gas Sensor Semiconductor Sensor for Flammable Gases

@ expert peshawar

Detect dangerous gas leaks in the kitchen or near the gas heater. This unit detects 300 to 5000ppm of Natural Gas. Ideal to detect dangerous gas leaks in the kitchen. Our MQ5 Natural Gas Sensor can be easily configured as an alarm unit. The sensor can also sense LPG and Coal Gas.


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MQ5 Gas Sensor module is useful for gas leakage detection (in home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol. MQ-5 gas sensor has high sensitivity to butane, propane, methane and can detect methane and propane at the same time. It also can detect kinds of flammable gases, especially LPG(propane).

MQ5 Gas Sensor has a sensitive filament made of SnO2. In the presence of clean air, this filament tends to have lower electrical conductivity. When a combustible gas such as LPG is introduced, the filament’s conductivity rises, and the amount of change in it’s onductance / resistance can be used to indicate the equivalent gas concentration.

This effect tends to be particularly pronounced at higher temperatures, and resistive heating element is present as well. SnO2 is particularly sensitive to Methane, Butane and Propane, but is also sensitive to other combustible gases as well.

The MQ5 Gas Sensor module is useful for gas leakage detecting. It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on.

MQ2 can sense methane(CH4) upto 20000 ppm where as MQ5 can sense CH4 only upto 10000 ppm. The difference between MQ5 and MQ2 therefore lies in its range of values.


  • Indication of the signal output.
  • Dual signal output (analog output, and TTL level output)
  • TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
  • 0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage.
  • Liquefied petroleum gas, natural gas, city gas, better sensitivity.
  • Has a long life and reliable stability
  • Fast response and recovery characteristics
  • Operating voltage: DC 5 V

MQ5 Gas Sensor Application:-

  • Domestic gas leakage detector
  • Industrial Combustible gas detector
  • Portable gas detector

MQ-5 Gas sensor pin diagram


MQ5 Gas sensor pin diagram

How to Use

In the case of working with a MCU:

  • VCC ↔ 2.5V ~ 5.0V
  • GND ↔ power supply ground
  • AOUT ↔ MCU.IO (analog output)
  • DOUT ↔ MCU.IO (digital output)

MQ-5 Gas sensor Circuit Diagram

MQ5 gas sensor circuit diagram

MQ 5 Gas Sensor Arduino

MQ5 gas sensor Arduino

MQ 5 gas sensor Arduino library

MQ-5 gas sensor Arduino library

Buy MQ5 Gas Sensor at best price in Pakistan at

MQ-5 Gas Sensor Datasheet:-

MQ5 Gas Sensor Datasheet


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Vendor Information

  • Store Name: expert.peshawar
  • Vendor: expert.peshawar
  • Address: Market
    Khyber Pakhtunkhwa
  • 5.00 5.00 rating from 1 review
MQ5 Gas Sensor Semiconductor Sensor for Flammable Gases
MQ5 Gas Sensor Semiconductor Sensor for Flammable Gases


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