MQ2 Smoke Gas Sensor Module
The MQ2 Smoke Gas Sensor Module is a highly sensitive, efficient component designed for detecting combustible gases like LPG, methane (CH4), hydrogen (H2), propane, and smoke. It’s a widely used sensor in smart home safety systems, IoT-based gas detection, and DIY electronics projects.
This sensor module integrates a semiconductor sensing element and an internal heating element, offering fast response times and reliable performance. It supports both analog and digital outputs, making it perfect for various platforms, especially with Arduino and other common microcontrollers. The onboard potentiometer allows users to adjust the sensitivity range as needed, enabling more control over detection thresholds.
🔍 Key Features & Technical Specifications:
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Target Gases: Smoke, LPG, Methane (CH4), Hydrogen (H2), Propane
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Operating Voltage: 5V DC
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Current Consumption: ~150mA
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Output Type: Analog & Digital
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Detection Range: 300 – 10000 ppm
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Response Time: ≤ 10 seconds
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Preheat Time: ~20 seconds
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Sensitivity Adjustment: Onboard potentiometer
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LED Indicators: Power and signal output
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Form Factor: Compact for easy integration
⚙️ Applications:
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Gas leak detection for homes, kitchens, and offices
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Smoke detection systems in residential & industrial setups
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DIY IoT air quality monitors
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Educational electronics & robotics kits
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Integration in Arduino-based safety projects
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Embedded systems for smart automation
💡 Microcontroller Compatibility:
The MQ2 module is fully compatible with popular development platforms like Arduino, ESP8266, ESP32, STM32, and Raspberry Pi, making it a top choice for both hobbyists and professionals.
🔗 Explore Related Components:
Looking for more modules like this? Browse our full Sensor Collection at ElectroWay for more innovative components and kits.
🎥 How It Works:
Learn how to use the MQ2 sensor in real-time projects with this helpful YouTube tutorial.
📍 Available at ElectroWay, located in Johar Town, Lahore — your trusted hub for quality electronics, components, and STEM education support in Pakistan.
Electronic Characteristics:
| Items | Parameter name | Min | Type | Max | Unit |
| System Characteristics | |||||
| VCC | Working Voltage | 4.9 | 5 | 5.1 | V |
| PH | Heating consumption | 0.5 | – | 800 | mW |
| RL | Load resistance | can adjust | |||
| RH | Heater resistance | – | 33 | – | Ω |
| Rs | Sensing Resistance | 3 | – | 30 | kΩ |
Package Includes:
1 x MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module
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