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MQ6 sensor is a sensor having high sensitivity to LPG, propane and isobutane. These sensors can also be used for the detection of different combustible gases, especially methane. 

The SnO2 semiconductor material is used in the MQ6 for detecting the gases. It has lower conductivity in clean air. It helps in detecting the rising levels of gases through rise in its conductivity. Users can convert the change of conductivity to gas concentration through a simple electronic circuit.

An MQ6 gas sensor has a wide array of applications such as:

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

Applicability of the MQ6 gas sensor is enhanced by the following features:

  • High sensitivity to LPG,iso-butane and propane
  • Good sensitivity to combustible gases in a wide range
  • Fast response time
  • Long life
  • Low cost
  • Simple drive circuit

MQ6 Gas Sensor specifications

  • Operating Voltage: 5V 
  • Operating Current: 150mA
  • Operating Temperature: -10 to 50 degree Celsius
  • Concentration: 200-10000ppm


Usage: Gas Sensor
Theory: Hall Sensor
Material: Mixture
Output: Analog Sensor
Type: Gas Sensor

Dual signal output (analog output, and TTL level output)
TTL output valid signal is low. (Low-level signal when the output pin can be directly connected to the microcontroller)
0 ~ 5V analog output voltage, the higher the concentration the higher the voltage.
For LPG, butane, propane has a good sensitivity.
Having a long life and reliable stability
Quick response and resume



1. LPG gas sensor interface with Arduino (MQ6)

2. Arduino based Gas Leakage Detection Using MQ6 Gas Sensor


MQ-6 MQ6 LPG -Isobutane / Propane Gas Sensor

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