MQ-2 Gas Sensor Module - Detect H2, LPG, CH4, CO, Smoke & Propane

Reliable multi-gas detection module from The Engineer Store, Bengaluru. The MQ-2 sensor module provides accurate, real-time detection of combustible gases and smoke - ideal for safety systems, IoT projects, and industrial monitoring. Fast shipping, 7-day warranty on manufacturing defects, and expert support included.

Specifications

Why Choose This MQ-2 Gas Sensor Module?

• Multi-Gas Detection: A single module detects hydrogen, LPG, methane, carbon monoxide, smoke, propane, and alcohol vapors - versatile protection in one compact board
• Dual Output Modes: Analog output for precise concentration measurement and digital output for simple threshold-based triggering - use either or both simultaneously
• Adjustable Sensitivity: Onboard potentiometer lets you fine-tune the digital trigger threshold to match your specific environment and application requirements
• Plug-and-Play with Arduino & ESP32: Standard 4-pin header connects directly to any microcontroller - read analog values with analogRead() or monitor digital pin for instant alerts
• Fast Response Time: High-sensitivity SnO2 sensing element responds quickly to changes in gas concentration, providing near-real-time detection for safety-critical applications
• 100% Authentic: Sourced directly from trusted, authorized suppliers - genuine MQ-2 sensing element with proper calibration characteristics
• 1-5 days shipping: Ships from our Bengaluru warehouse to most locations across India, with same-day delivery available in Bengaluru
• Expert Technical Support: Full guidance on wiring, calibration, code integration, and troubleshooting included with every purchase

Project Ideas

• Smart Home Gas Leak Alarm: Build an LPG and natural gas leak detector with buzzer and SMS/push notification alerts using Arduino or ESP32 - protect your kitchen and home from dangerous leaks
• IoT Air Quality Monitor: Combine with ESP8266/ESP32 and cloud platforms like Blynk, ThingSpeak, or Home Assistant to remotely monitor gas levels and smoke from anywhere via your smartphone
• Fire & Smoke Detection System: Create an early-warning smoke detector that triggers alarms, activates exhaust fans, or sends emergency alerts before visible flames appear
• Industrial Safety Monitor: Deploy in workshops, factories, or warehouses to continuously monitor for combustible gas accumulation and trigger automated ventilation or shutdown systems
• Carbon Monoxide Detector: Build a CO safety monitor for enclosed spaces like garages, basements, or rooms with gas heaters - critical for preventing silent CO poisoning
• Robotics & Autonomous Systems: Integrate into mobile robots for hazardous environment exploration - detect gas leaks in mines, pipelines, or disaster zones
• Educational Lab Projects: Perfect for learning about analog-to-digital conversion, sensor calibration curves, threshold logic, and real-world embedded systems design
• Multi-Sensor Environmental Station: Combine with temperature (DHT22), humidity, dust (GP2Y1010AU0F), and air quality (MQ-135) sensors for a comprehensive environmental monitoring dashboard

How It Works

The MQ-2 module uses a tin dioxide (SnO2) semiconductor sensing element. In clean air, SnO2 has relatively high electrical resistance. When combustible gas molecules contact the heated sensing surface, they reduce the SnO2, lowering its resistance proportionally to gas concentration. The onboard circuit converts this resistance change into an analog voltage (0-5V on the A0

Frequently Asked Questions

Buy MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module Online in India

Purchase the MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy MQ-2 Gas Sensor Module For H2, LPG, CH4, CO, Smoke or Propane Detector Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.