MQ-4 Natural Gas Sensor Module for Methane (CNG) Gas Detection

The MQ-4 Natural Gas Sensor Module is a highly sensitive gas detection module designed for detecting Methane (CH₄), Compressed Natural Gas (CNG), and other natural gas concentrations in the surrounding environment. The module uses a semiconductor gas sensor that provides fast response, high sensitivity, and stable performance. It features both analog and digital outputs, making it easy to interface with microcontrollers such as Arduino, ESP32, Raspberry Pi, and other embedded systems. This sensor is widely used in gas leakage detection systems, safety monitoring devices, smart home projects, and industrial gas monitoring applications.

Key Features

• Detects Methane (CH₄) and Natural Gas (CNG)

• High sensitivity and fast response time

• Analog and digital output signals

• Adjustable sensitivity using onboard potentiometer

• Stable and reliable performance

• Easy interfacing with microcontrollers

• Built-in power and status indicators

• Suitable for safety and monitoring applications

Specifications

• Sensor Model: MQ-4

• Gas Detected: Methane (CH₄), Natural Gas (CNG)

• Operating Voltage: 5V DC

• Output Type: Analog and Digital

• Sensitivity Adjustment: Onboard Potentiometer

• Response Time: Fast Response

• Interface: Standard Module Pins

• Operating Temperature: Suitable for indoor monitoring applications

Applications

• Methane gas leak detection

• CNG leakage monitoring systems

• Smart home safety systems

• Industrial gas monitoring

• Gas alarm systems

• Environmental monitoring projects

• Arduino and ESP32 projects

• Educational and research applications

Package Includes

• 1 × MQ-4 Natural Gas Sensor Module

Benefits

• Provides early detection of methane and natural gas leaks

• Easy integration with development boards and controllers

• Adjustable sensitivity for different environments

• Reliable and cost-effective gas monitoring solution

• Suitable for both hobby and professional applications

The MQ-4 Natural Gas Sensor Module is an essential gas detection component for safety and monitoring applications, offering dependable methane and natural gas sensing capabilities, simple interfacing, and reliable performance for a wide range of electronic and industrial projects.

Frequently Asked Questions

What is an MQ-4 Natural Gas Sensor Module?

The MQ-4 is a semiconductor gas sensor module designed primarily for detecting methane (CH₄) and natural gas/CNG in the air.

What gases can the MQ-4 sensor detect?

The MQ-4 is primarily designed for methane and natural gas detection. The sensor may also show sensitivity to other gases, so it should not be treated as a selective laboratory-grade gas analyzer.

Can I use the MQ-4 sensor with Arduino?

Yes, the MQ-4 module can be connected to compatible Arduino boards. Its analog or digital output can be used for gas detection and monitoring projects.

Does the MQ-4 module have analog and digital outputs?

Common MQ-4 modules provide both an analog output (AO) and a digital output (DO). The digital detection threshold can typically be adjusted using the onboard potentiometer.

What is the MQ-4 sensor used for?

It can be used for methane detection, CNG monitoring, gas leakage detection projects, gas alarm prototypes, IoT monitoring, home automation and educational electronics projects.

What is the typical detection range of an MQ-4 sensor?

Common MQ-4 modules are specified for methane detection in approximately the 300 to 10,000 ppm range, although the exact specifications depend on the particular sensor module.

Does the MQ-4 require warm-up time?

Yes. MQ-series gas sensors require a warm-up period before readings become stable. For accurate measurements, follow the warm-up and calibration requirements specified for your particular module.

Is the MQ-4 a certified gas safety device?

No. A typical MQ-4 development module should be considered a sensor for prototyping, educational and monitoring projects. It should not be relied upon as the sole safety device for detecting hazardous gas leaks.

Where can I buy an MQ-4 Methane CNG Gas Sensor Module online in India?

You can purchase the MQ-4 Natural Gas Sensor Module online from Electro Robo Store.