About this item

⛽ MQ-4 Gas Sensor Module – Methane (CH₄) Detector

The MQ-4 gas sensor module is designed to detect methane (CH₄) and other combustible gases. With both analog and digital outputs, it can be easily interfaced with Arduino, ESP32, Raspberry Pi, and other embedded systems for gas leak monitoring.

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🛡️ Features & Advantages

• ⛽ Methane (CH₄) detection
• 📡 Analog and digital outputs
• 🔧 Adjustable detection threshold via potentiometer
• ⚡ 5V operation
• 🧰 Easy microcontroller integration
• 🚨 Ideal for gas alarm systems

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📦 Technical Description

• 🧩 Sensor: MQ-4
• 🎯 Detected gases: Methane (CH₄), natural gas, biogas
• ⚡ Supply voltage: 5V DC
• 📡 Analog output (AO): gas concentration signal
• 🔔 Digital output (DO): adjustable detection threshold
• 🔧 Sensitivity adjustment: onboard potentiometer
• 🌡️ Recommended warm-up time: 20–60 seconds (longer for optimal accuracy)

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🛠️ Applications

• 🏠 Household gas leak detection
• ⛽ Natural gas monitoring
• 🤖 Arduino and ESP32 projects
• 🚨 Alarm and safety systems
• 🧪 Educational and experimental projects

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⚠️ Usage Notes

• ❗ Warm-up time is required before reliable measurements
• 🔧 Avoid extremely humid or dusty environments
• 🛡️ Do not use as a certified safety device without proper validation
• 📏 Calibrate the sensor for best results in your application

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✨ Key Features

• ⛽ Methane (CH₄) detection
• 📡 Analog and digital outputs
• 🔧 Adjustable sensitivity
• ⚡ 5V operation
• 📦 Arduino and ESP32 compatible

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📦 Package Contents

• 1 × MQ-4 Gas Sensor Module