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

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

β‚Ή98.00Price
πŸ”₯ MQ-4 Natural Gas Sensor Module (Methane / CNG) 
πŸ›’ Popular MQ-4 Sensor Options
MQ-4 Methane Gas Sensor Module
Description: None
Price: β‚Ή120
URL:
Number of Reviews: 18
Rating: 4.6
Featured Tag:
Merchants: Robocraze + others
MQ4 Gas Sensor for CNG Detection
Description: None
Price: β‚Ή95
URL:
Number of Reviews: 9
Rating: 4.5
Featured Tag:
Merchants: Quartz Components
MQ-4 Natural Gas Detector Module
Description: None
Price: β‚Ή135
URL:
Number of Reviews: None
Rating: None
Featured Tag:
Merchants: electronicscomp.com + others
MQ-4 Gas Sensor Breakout Board
Description: None
Price: β‚Ή160
URL:
Number of Reviews: 5
Rating: 4.8
Featured Tag:
Merchants: Robu.in
Methane CNG Gas Sensor MQ4
Description: None
Price: β‚Ή110
URL:
Number of Reviews: None
Rating: None
Featured Tag:
Merchants: Amazon.in
πŸ“Œ Overview
The MQ-4 Gas Sensor Module is designed to detect methane (CHβ‚„) and natural gas (CNG).
πŸ‘‰ Commonly used in:
  • 🏠 Home gas leak detection
  • 🏭 Industrial safety systems
  • πŸš— CNG vehicle monitoring
  • πŸ€– IoT gas detection projects
🧠 Working Principle
  • Uses SnOβ‚‚ (Tin Dioxide) sensing material
  • In clean air β†’ low conductivity
  • In presence of methane β†’ conductivity increases
πŸ‘‰ The sensor converts this change into analog voltage output
βœ” Similar working principle as other MQ-series sensors
πŸ“Š Infographic Summary
β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚ πŸ”₯ MQ-4 GAS SENSOR β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚ 🎯 Detects: Methane (CHβ‚„) β”‚
β”‚ ⚑ Voltage: 5V β”‚
β”‚ πŸ“ Range: 300–10,000 ppm β”‚
β”‚ πŸ”Œ Output: Analog + Digital β”‚
β”‚ πŸ”₯ Type: Combustible Gas β”‚
β”‚ ⏱ Response: Fast β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜
πŸ”Œ Pin Configuration
β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚ MQ-4 Module β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚ VCC β†’ 5V
β”‚ GND β†’ Ground
β”‚ AO β†’ Analog
β”‚ DO β†’ Digital
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜
βš™οΈ Key Specifications
  • ⚑ Operating Voltage: 5V DC
  • πŸ“ Detection Range: 300 – 10,000 ppm
  • πŸ”Œ Output:
    • Analog (gas concentration level)
    • Digital (threshold detection)
  • πŸ”₯ Sensitive Gas: Methane (CHβ‚„), Natural Gas
  • πŸ”‹ Current Consumption: ~150 mA (heater required)
  • 🌑 Operating Temperature: -10Β°C to 50Β°C
🌟 Key Features
  • πŸ”₯ High sensitivity to methane gas
  • ⚑ Fast response and recovery
  • πŸ”§ Easy to interface with Arduino/ESP32
  • πŸ’° Low-cost sensor module
  • πŸ” Adjustable sensitivity (potentiometer)
πŸ§ͺ Applications
  • 🏠 Domestic gas leakage alarm
  • πŸš— CNG vehicle safety system
  • 🏭 Industrial gas monitoring
  • πŸ€– IoT gas detection systems
  • πŸ”” Alarm systems with buzzer
πŸ”— Interfacing
Compatible with:
  • πŸ”΅ Arduino
  • πŸ“‘ ESP32 / ESP8266
  • πŸ“ Raspberry Pi
πŸ‘‰ Use:
  • AO β†’ measure gas concentration
  • DO β†’ 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
πŸ’¬ Real-world insight:
MQ sensors are better for detection (presence) than exact measurement
πŸ†š MQ-4 vs MQ-6
FeatureMQ-4MQ-6
Best ForMethane (CNG)LPG, Butane
Gas TypeNatural gasCooking gas
Use CaseVehicles, pipelinesHomes, kitchens
πŸ’‘ Pro Tip
For a smart gas leak alarm:
  • MQ-4 + Buzzer πŸ”Š + LED πŸ’‘ + Microcontroller
πŸ‘‰ Detect methane leaks and alert instantly
Quantity
bottom of page