MQ 6 LP gas (propane/butane) Sensor RobotDYN

AED 21.00

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The RobotDYN MQ6 is a Module is a device that measures propane and butane concentrations in the air. These two gases make up liquefied petroleum gas (LPG), hence these sensors can also be used to detect other flammable gases, including methane.

Package Includes:

  • 1x RobotDYN MQ6 LPG Sensor


  • 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
  • Concentration: 200-10000ppm
  • Preheat duration 20 seconds
  • Can be used as a Digital or analog sensor
  • You can vary the Sensitivity of the Digital pin using the potentiometer


The RobotDYN MQ6 is a Module is a device that measures propane and butane concentrations in the air. These two gases make up liquefied petroleum gas (LPG), hence these sensors can also be used to detect other flammable gases, including methane. The RobotDYN MQ6's SnO2 semiconductor material is utilized for gas detection. In pure air, the conductivity is lower. Through an increase in conductivity, it aids in the detection of growing gas concentrations. Through the use of a potentiometer, users can transform changes in conductivity into changes in gas concentration. The module also contains a digital and analog output as well as a led indicator for power and detection.

Principle of Work:

Gas detection is fairly simple with RobotDYN MQ6. The analog pin or the digital pin might be used for this. When the module is powered with 5V, the output LED will remain off, leaving the digital output pin at 0V and empty. Before you can use these sensors, they need to be pre-heat for a period of time. If the output LED and digital pin don't go high after you make a gas contact with the sensor, adjust the potentiometer until they do. The digital pin will now go high (5V) if your sensor is exposed to this gas at this specific concentration, else it will stay low (0V). The analog pin can be used to accomplish the same goal as well. Using a microcontroller, read the analog values (0–5V), and this value will be directly proportional to the amount of gas the sensor is detecting. You can play about with these settings to see how the sensor responds to various gas concentrations and adjust your program as necessary.

Pinout of the Sensor:

Pin No:

Pin Name:




This pin powers the module, typically the operating voltage is +5V



Used to connect the module to system ground


Digital Out

You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer


Analog Out

This pin outputs 0-5V analog voltage based on the intensity of the gas 



LPG Gas Leakage Detectors

Every kitchen in a home uses natural gas, thus using a sensor that safeguards the environment is essential. Kitchens can be equipped with LPG gas detectors that use RobotDYN MQ6 sensors.

Gas Leakage Alarms

RobotDYN MQ6 is used in gas leakage alarms to produce warnings when petroleum-based gas leaks are present since it is a gas sensor that is exceptionally sensitive to these gases.

Air Quality Monitor

By integrating with other IoT systems that can create better ventilation monitoring devices, air monitoring systems that employ RobotDYN MQ6 have a larger potential to improve and recover breathing standards due to their flexibility and low cost.


The Arduino board can be used to connect the RobotDYN MQ6 sensor. the GND pin is linked to the GND pins of the Arduino and the VCC pin is linked to the Arduino board's +5V power source pin, the A out tied to the Arduino board's Analog pin A0. watch the readings on the Serial monitor. use the sensor with LPG from an oven or a lighter to check the abrupt changes in readings. As a result, the adjustments are visible on the serial monitor. and if the sensor Value is> 400 the Built-in LED will turn on if the value of the digital out is 1.


This Module doesn't need any Library to function.


#define MQ6pin 0
float sensorValue; //variable to store sensor value
void setup() {
 Serial.begin(9600); // sets the serial port to 9600
 Serial.println(" RobotDYN MQ6 warming up!");
 delay(20000); // allow the  RobotDYN MQ6 to warm up
void loop() {
 sensorValue = analogRead( MQ6pin); // read analog input pin 0
 Serial.print("Sensor Value: ");
 if(sensorValue > 400){
 delay(2000); // wait 2s for next reading

Technical Details:

  • Operating Voltage: 5V 
  • Operating Current: 150mA
  • Operating Temperature: -10 to 50 degrees Celsius
  • Detecting Concentration: 300 to 10000 ppm
  • Digital Output Voltage: TTL digital 0 and 1 (0.1 V and 5 V)
  • Analog Output Voltage (relatively clean): 0.1 V to 0.3 V
  • Analog Output Voltage (highest concentration): 4 V
  • PCB Size: 38 x 24 mm




The MQ series Gas sensors are the most frequently used ones when it comes to measuring or detecting a specific Gas. it is advised to purchase the sensor alone if you intend to monitor a gas' ppm levels (without a module). the RobotDYN MQ6  sensing range of 300-10000 PPM is suitable for LPG leak detection and also for also to butane gas, the MQ5 Sensor can detect Natural gas, and LPG so we prefer using RobotDYN MQ6 with gas detection systems in homes.