MQ-2 Gas Sensor

Description

The MQ-2 is a versatile gas sensor that detects LPG, smoke, methane, propane, hydrogen, and other gases. It’s widely used in gas leak detection systems and fire alarms. Output is analog and can be calibrated for specific environments.

Specs

Operating Voltage	5V DC
Detectable Gases	LPG, Methane, Alcohol, Propane, Hydrogen, CO, Smoke
Analog Output	0 – 5V (gas concentration dependent)
Preheat Time	20 seconds (typical)
Response Time	≤ 10s
Dimensions	32mm × 20mm × 22mm

Compatibility

• Arduino & ESP boards (analog input)
• Raspberry Pi (via ADC module)
• 3.3V-compatible with voltage divider

Resources

• 📘 Arduino MQ-2 Tutorial
  Guide
• 🔧 MQ-2 Datasheet
  PDF Datasheet
• 💡 Raspberry Pi Gas Detection
  Tutorial

Description
The MQ2 Gas Sensor Module is designed for detecting a wide range of gases including LPG, methane, propane, alcohol, hydrogen, and smoke. It features both analog and digital outputs, allowing flexible integration into various air quality monitoring and safety systems. Operating at 5V DC, it offers adjustable sensitivity, high responsiveness, and a compact PCB size of 4.5 cm × 1.8 cm. Ideal for gas leak detection and indoor air safety applications.

Specs
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Compatibility
Compatibility information goes here.

Resources
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