MQ-4 Methane/ Natural Gas Sensor Module for Arduino

MQ-4 Natural Gas Sensor Module For Methane(CNG) gas Detection Arduino Sensor
Features:

Signal output indicator
Dual Signals output (analog output and TTL output)
The TTL output signal is low level, allows to connect with SCM directly
High sensitivity
Long working life and stable performance
Quick response and recovery.

Applications:

Domestic gas leakage detector
Industrial Combustible gas detector
Portable gas detector

Package Includes:

1 x MQ4 Gas Sensor Module

MQ4 Gas Sensor Pinout Configuration
For MQ-4 Sensor Module

Pin Name
Description

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

GND
Used to connect the module to system ground

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

Analog Out (AO)
This pin outputs 0-5V analog voltage based on the intensity of the gas

 
Interface MQ-4 Gas sensor with Arduino UNO:
How to Interface MQ4 Methane Gas Sensor with Arduino?