MQ-2 Smoke, Methane, Butane & LPG Sensor Module

🔍 Product Overview

The MQ-2 Sensor Module is a highly versatile gas detection device designed to sense smoke, methane (CH₄), butane, LPG (propane mixtures), and other flammable gases. It provides both analog and digital outputs, allowing it to be used for real-time gas concentration measurement or simple threshold-based alarms.

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🚀 Why It’s Ideal for Your Projects

• Wide detection range – Capable of detecting a broad spectrum of gases including smoke, propane, and methane, making it ideal for safety and monitoring systems.

• Dual output design – The analog output provides accurate readings of gas concentration, while the digital output triggers an alert when levels exceed a set threshold.

• Microcontroller-friendly – Operates on a 5 V power supply and integrates seamlessly with Arduino, ESP32, Raspberry Pi, and similar development boards.

• Adjustable sensitivity – Built-in potentiometer lets you fine-tune the detection threshold for specific gases or conditions.

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🧩 Key Features

• Detects smoke, methane, butane, propane, and other combustible gases.

• Provides both analog voltage output and digital output for flexible use.

• Detection range: approximately 200 ppm – 10,000 ppm depending on gas type.

• Operating voltage: 5 V DC with onboard heater for consistent operation.

• Fast response and recovery times for reliable monitoring.

• Compact and durable module design, easy to install and interface.

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⚙️ Typical Applications

• Gas-leak alarms – Detect dangerous concentrations of LPG, methane, or butane in homes and industries.

• Smoke detection systems – Identify smoke or flammable vapors for safety applications.

• Smart home automation – Trigger fans, alarms, or alerts when gas levels rise above safe limits.

• Educational projects – Perfect for learning about environmental sensing, analog signal processing, and IoT integration.

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✅ Why You’ll Love It

The MQ-2 sensor is a trusted and affordable solution for detecting smoke and combustible gases in real time. Its dual output system, high sensitivity, and easy integration make it an essential tool for developing safety, automation, or environmental monitoring systems with minimal effort.