Specification:

Features:

• Target Gases:
  Specially designed to detect Methane (CH₄), Natural Gas, and to a lesser extent LPG (Liquefied Petroleum Gas).

• High Sensitivity:
  Strong sensitivity to methane and natural gas in concentrations from 200 to 10,000 ppm.

• Fast Response & Recovery:
  Quickly reacts to gas presence and returns to baseline after the gas is removed.

• Dual Output Types:

  • Analog Output (AO): Proportional to gas concentration level.

  • Digital Output (DO): Goes HIGH when gas exceeds the preset threshold.

• Adjustable Sensitivity:
  Onboard potentiometer allows you to set the threshold for the digital output.

• Operating Voltage:
  Typically powered by 5V DC.

• Preheat Time:
  Requires 20–60 seconds of preheating for stable and accurate gas detection.

• Durable and Stable:
  Long operating life and consistent performance under standard environmental conditions.

• Easy Integration:
  Compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers.

• Onboard Indicators:
  Includes power and digital output LEDs for status indication.

Description:

This is a straightforward MQ-4  Gas Sensor Module that detects the presence of Compressed Natural Gas (CNG), methane (CH4), and other gases in the air. Our MQ-4 sensor is used in the module. It simplifies the interface to the sensor's odd pin spacing by providing the interface via standard 4 x 0.1′′ header pins.
It has an analogue output that corresponds to the concentration of gases in the air and a simple digital output. The onboard potentiometer can be used to set the maximum gas concentration that will trigger the digital output. The MQ-4 sensor is capable of detecting natural gas concentrations ranging from 200 to 10000ppm.
Simply connect the MQ 4 sensor module to 5V, set the threshold, and you can begin measuring the gas concentration in the air around the sensor! The presence of any gas is indicated by an onboard LED. Microcontrollers and other circuits can easily interface with the digital output. The analogue output can be connected to a microcontroller's ADC to obtain a wide range of sensor readings.
This is a simple compressed natural gas (CNG) sensor for sensing natural gas concentrations in the air (mostly Methane [CH4]).