MQ9 Carbon Monoxide, Methane, and LPG Gas Sensor Module

The MQ9 Carbon Monoxide, Methane, and LPG Gas Sensor Module is a versatile and highly sensitive sensor designed for detecting flammable and toxic gases in both indoor and industrial environments. This sensor is widely used in IoT, smart home systems, and Arduino-based gas monitoring projects.

With the ability to detect Carbon Monoxide (CO), Methane (CH4), Liquefied Petroleum Gas (LPG), and other combustible gases, the MQ9 ensures early detection of gas leaks to prevent hazardous incidents. It features a built-in potentiometer for threshold adjustment, and provides both analog and digital outputs for flexible interfacing with various microcontrollers.

Its compact design and 5V operating voltage make it easy to integrate into DIY electronics, gas leak detection systems, and automated alarm devices. The preheat time ensures sensor stability and accurate results in environments such as kitchens, workshops, and labs.

Whether you’re developing an air quality monitoring system, a smart LPG alert, or an industrial safety solution, the MQ9 is a reliable, cost-effective choice.

📍Available now at ElectroWay, located in Johar Town, Lahore — your trusted hub for sensor modules, Arduino kits, and DIY electronics.
🔗 Check out more gas sensor modules here.

🔧 Technical Specifications:

• Sensor Type: Semiconductor gas sensor

• Detected Gases: CO, CH4 (Methane), LPG, and other combustible gases

• Operating Voltage: 5V DC

• Output: Analog & Digital

• Load Resistance: Adjustable via onboard potentiometer

• Preheat Time: ~60 seconds

• Operating Temperature: -10°C to 50°C

• Compact PCB size for breadboard and custom enclosures

• Compatible With: Arduino, NodeMCU, ESP8266, ESP32, Raspberry Pi

💡 Applications:

• 🏠 Smart home gas leak detection systems

• 🏭 Industrial safety systems for gas leak alerts

• 🧪 STEM educational kits and university projects

• 🚨 Automated alarms and IoT warning devices

• 📦 Embedded systems development in Lahore and beyond

🎥 External Video Resource (YouTube)

👉 Watch MQ9 Sensor Working Demo