MQ-2 LPG Butane Hydrogen Smoke Gas Sensor Detector Module

The MQ-2 Gas Sensor Module is a high-sensitivity sensor designed for detecting flammable and hazardous gases, including LPG, methane, butane, propane, hydrogen, and smoke. This makes it an essential component for gas leak detection, air quality monitoring, and safety applications in homes, industries, and commercial spaces.

This sensor operates on heated tin dioxide (SnO2), which has low conductivity in clean air but increases in the presence of gas, providing a real-time gas concentration reading. The module provides both digital and analog outputs, allowing flexible interfacing with microcontrollers like Arduino, ESP32, and Raspberry Pi.

An adjustable potentiometer enables sensitivity tuning to suit specific detection needs. The sensor is highly responsive, stable, and reliable, making it perfect for safety systems, industrial monitoring, and IoT-based smart home applications.

Specification

• Operating Voltage: 5V DC
• Gas Detection Range: LPG, methane, butane, propane, hydrogen, alcohol, and smoke
• Sensitivity Adjustment: Via onboard potentiometer
• Output Type:
  • Analog (A0): Provides gas concentration data
  • Digital (D0): High/Low signal based on threshold
• Preheat Time: ≥ 20 seconds
• Response Time: < 10 seconds
• Operating Temperature: -10°C to 50°C
• Power Consumption: Low
• Module Dimensions: Compact and lightweight

Key Features

• High sensitivity for detecting multiple flammable and harmful gases
• Dual output (analog and digital) for real-time monitoring and alert systems
• Adjustable sensitivity via onboard potentiometer
• Quick response time (<10 seconds) for instant gas detection
• Stable and reliable performance in various environments
• Compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers
• Compact and lightweight design for easy integration

Applications

• Gas Leak Detection – Prevents gas-related hazards in homes, kitchens, and industries
• Air Quality Monitoring – Detects smoke and harmful gases for environmental safety
• Fire & Safety Systems – Integrated into fire alarms and gas leakage warning systems
• Smart Home Automation – Monitors air quality in IoT-based smart homes
• Industrial Applications – Ensures workplace safety by detecting gas leaks in factories

The MQ-2 Gas Sensor Module is an essential tool for gas safety and air quality monitoring, offering high sensitivity, quick response, and easy integration for a wide range of applications.

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