MQ6 Propane Gas Sensor Module


MQ-6 Liquefied Petroleum isobutane propane gas Sensor Module. This sensor has high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

The sensitive material of the MQ-6 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exists, The sensor’s conductivity is higher along with the gas concentration rising. Please use a simple electro circuit, Convert the change of conductivity to the corresponding output signal of gas concentration.

MQ-6 gas sensor has a high sensitivity to Propane, Butane, and LPG, and also a response to Natural gas. The sensor could be used to detect different combustible gas, especially Methane, it is low-cost and
suitable for different application


  • Indication of the Signal Output
  • Dual Signal Output (analog output, and TTL level output)
  • The 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
  • High Sensitivity to Hydrogen
  • Can be Resistant to Ethanol Steam, LPG (petroleum), Smoke Interference
  • Has a long life and Reliable Stability
  • Fast Response and Recovery Characteristics


Pin NamePin Description
VccThis pin powers the module, typically the operating voltage is +5V
GroundUsed to connect the module to the system ground
Digital OutYou can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer
Analog OutThis pin outputs 0-5V analog voltage based on the intensity of the gas 


Model NoMQ-6
Dimensions36 x 20 x 22 mm(LxWxH)
Weight8 gm
Operating voltage+5v


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


Download the Datasheet of the MQ6 Gas Sensor from the link given below.