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MQ-4 Natural Gas Sensor Module For Methane(CNG) gas Detector Module

MQ-4 Natural Gas Sensor Module For Methane(CNG) gas Detector Module

₹98.00Price

🔥 MQ-4 Natural Gas Sensor Module (Methane / CNG) 

🛒 Popular MQ-4 Sensor Options

MQ-4 Methane Gas Sensor Module

Description: None
Price: ₹120
URL:
Number of Reviews: 18
Rating: 4.6
Featured Tag:
Merchants: Robocraze + others

MQ4 Gas Sensor for CNG Detection

Description: None
Price: ₹95
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Number of Reviews: 9
Rating: 4.5
Featured Tag:
Merchants: Quartz Components

MQ-4 Natural Gas Detector Module

Description: None
Price: ₹135
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MQ-4 Gas Sensor Breakout Board

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Merchants: Robu.in

Methane CNG Gas Sensor MQ4

Description: None
Price: ₹110
URL:
Number of Reviews: None
Rating: None
Featured Tag:
Merchants: Amazon.in

📌 Overview

The MQ-4 Gas Sensor Module is designed to detect methane (CH₄) and natural gas (CNG).

👉 Commonly used in:

  • 🏠 Home gas leak detection

  • 🏭 Industrial safety systems

  • 🚗 CNG vehicle monitoring

  • 🤖 IoT gas detection projects

🧠 Working Principle

  • Uses SnO₂ (Tin Dioxide) sensing material

  • In clean air → low conductivity

  • In presence of methane → conductivity increases

👉 The sensor converts this change into analog voltage output

✔ Similar working principle as other MQ-series sensors

📊 Infographic Summary

┌──────────────────────────────┐
│ 🔥 MQ-4 GAS SENSOR │
├──────────────────────────────┤
│ 🎯 Detects: Methane (CH₄) │
│ ⚡ Voltage: 5V │
│ 📏 Range: 300–10,000 ppm │
│ 🔌 Output: Analog + Digital │
│ 🔥 Type: Combustible Gas │
│ ⏱ Response: Fast │
└──────────────────────────────┘

🔌 Pin Configuration

┌──────────────┐
│ MQ-4 Module │
├──────────────┤
│ VCC → 5V
│ GND → Ground
│ AO → Analog
│ DO → Digital
└──────────────┘

⚙️ Key Specifications

  • ⚡ Operating Voltage: 5V DC

  • 📏 Detection Range: 300 – 10,000 ppm

  • 🔌 Output:

    • Analog (gas concentration level)

    • Digital (threshold detection)

  • 🔥 Sensitive Gas: Methane (CH₄), Natural Gas

  • 🔋 Current Consumption: ~150 mA (heater required)

  • 🌡 Operating Temperature: -10°C to 50°C

🌟 Key Features

  • 🔥 High sensitivity to methane gas

  • ⚡ Fast response and recovery

  • 🔧 Easy to interface with Arduino/ESP32

  • 💰 Low-cost sensor module

  • 🔁 Adjustable sensitivity (potentiometer)

🧪 Applications

  • 🏠 Domestic gas leakage alarm

  • 🚗 CNG vehicle safety system

  • 🏭 Industrial gas monitoring

  • 🤖 IoT gas detection systems

  • 🔔 Alarm systems with buzzer

🔗 Interfacing

Compatible with:

  • 🔵 Arduino

  • 📡 ESP32 / ESP8266

  • 🍓 Raspberry Pi

👉 Use:

  • AO → measure gas concentration

  • DO → trigger alarm

⚠️ Important Notes

  • ⏳ Requires preheating (24–48 hours) for stable readings

  • ⚠️ Not highly selective (may respond to other gases slightly)

  • ⚠️ High power consumption due to heater

  • ⚠️ Not for precise ppm measurement

💬 Real-world insight:

MQ sensors are better for detection (presence) than exact measurement

🆚 MQ-4 vs MQ-6

FeatureMQ-4MQ-6
Best ForMethane (CNG)LPG, Butane
Gas TypeNatural gasCooking gas
Use CaseVehicles, pipelinesHomes, kitchens

💡 Pro Tip

For a smart gas leak alarm:

  • MQ-4 + Buzzer 🔊 + LED 💡 + Microcontroller

👉 Detect methane leaks and alert instantly

Quantity
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