The MQ2 Smoke and Gas Sensor Module is a versatile sensor capable of detecting a wide range of combustible gases and smoke, including LPG, methane, propane, hydrogen, alcohol, and butane. It is widely used in home safety, industrial gas leak detection, and Arduino or ESP-based smoke detector systems.
Designed with both analog and digital outputs, the MQ2 sensor is easy to integrate into Arduino, ESP32, ESP8266, and Raspberry Pi platforms. Its onboard potentiometer allows users to adjust the sensitivity, making it suitable for a wide range of detection levels in various environments.
Ideal for creating your own smoke alarms, gas leak alerts, or smart IoT safety devices, this module is essential for projects focused on indoor air safety and monitoring.
⭐ Key Features:
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🧪 Detects gases like LPG, methane, butane, hydrogen, propane, alcohol, and smoke
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📊 Supports both analog and digital outputs
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🔧 Adjustable sensitivity using onboard potentiometer
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⚡ Operates on 5V DC
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🔄 Fast response time and long life
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🧰 Easy to interface with Arduino, ESP8266, ESP32, Raspberry Pi
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✅ Ideal for home automation, gas leak alarms, and smoke detectors
⚙️ Technical Specifications:
| Parameter | Specification |
|---|---|
| Sensor Type | MQ-2 Semiconductor Gas Sensor |
| Detectable Gases | LPG, Methane, Propane, Smoke, Hydrogen, Alcohol, Butane |
| Operating Voltage | 5V DC |
| Output Signal | Analog & Digital |
| Load Resistance | 20kΩ (Adjustable) |
| Sensitivity Range | 200 – 10000 ppm |
| Preheat Time | 20 seconds |
| Dimensions | Approx. 32mm x 20mm |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi |
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