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MQ2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module in Pakistan

MQ2 MQ-2 MQ 2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module Smoke LPG Butane Hydrogen Gas Sensor Detector Module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol, Smoke, or Propane. Due to its high sensitivity and fast response time, the measurement can be taken as soon as possible. The sensitivity of the sensor can be adjusted by a potentiometer.MQ-2 gas sensor using gas sensitive material is to be clean air in the lower conductivity of tin oxide (SnO2). When the sensor when flammable gases are present in the environment in which the sensor’s conductivity with increasing concentration of combustible gas in the air increases. Use a simple circuit to convert the changes in conductivity and output signal that corresponds to the concentration of the gas.MQ-2 gas sensor higher sensitivity to liquefied petroleum gas, propane, hydrogen, detection of gas, and other combustible vapors are ideal. This sensor can detect a variety of flammable gas, are a low-cost sensor for many applications.



Specifications and Features:

  1. Dimensions: 36 x 20 x 21 mm(LxWxH)
  2. Weight:8 gm
  3. Operating Voltage is +5V
  4. Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO, and even methane
  5. Analog output voltage: 0V to 5V
  6. Digital Output Voltage: 0V or 5V (TTL Logic)
  7. Preheat duration 20 seconds
  8. Can be used as a digital or analog sensor
  9. The Sensitivity of the Digital pin can be varied using the potentiometer

Character Configuration:

  1. Good sensitivity to Combustible gas in a wide range
  2. High sensitivity to LPG, Propane, and Hydrogen
  3. Long life and low cost
  4. Simple drive circuit


  1. Domestic gas leakage detector
  2. Industrial Combustible gas detector
  3. Portable gas detector

Electronic Characteristics:

ItemsParameter nameMinTypeMaxUnit
System Characteristics
VCCWorking Voltage4.955.1V
PHHeating consumption0.5800mW
RLLoad resistancecan adjust
RHHeater resistance33Ω
RsSensing Resistance330









Following conditions must be avoided:

Water Condensation
Indoor conditions, slight water condensation will affect sensors’ performance lightly. However, if water condensation on the surfaces of the sensor and keeps a certain period, the sensor’s sensitivity will be decreased.

Used in high gas concentration
No matter the sensor is electrified or not if a long time placed in high gas concentration it will affect the sensor’s characteristic.

Long time storage
The sensor’s resistance produces reversible drift if it’s stored for a long time without electrifying, this drift is related to storage conditions. Sensors should be stored in an airproof without silicone gel bag with clean air. For the sensors with long time storage but no electrify, they need a long aging time for stability before using.

Long time exposed to adverse environment
No matter the sensors electrified or not, if exposed to adverse environments for a long time, such as high humidity, high temperature, or high pollution, etc, it will affect the performance of the sensor badly.

Continual vibration will result in sensors down-lead response then rapture. In transportation or assembling lines, a pneumatic screwdriver/ultrasonic welding machine can lead to this vibration.

If sensors meet strong concussion, it may lead its lead wire disconnected.

Package Includes:


  • 1 x MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module in Pakistan
SKU: D57,B105 Category:


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