Flammable Gas Sensor MQ9 (Analog/Digital)

Overview

The Flammable Gas Sensor MQ9 is a versatile gas sensor module designed to detect a wide range of flammable gases, including methane (CH4), carbon monoxide (CO), and liquefied petroleum gas (LPG). It features both analog and digital outputs, making it an ideal choice for gas leakage detection systems, safety alarms, and environmental monitoring projects. Whether you're a hobbyist, student, or professional engineer, the MQ9 offers reliable and precise detection capabilities for your embedded systems.

Key Features

• Dual Outputs: Analog (Aout) and digital (Dout) outputs for flexible integration with microcontrollers.
• Wide Detection Range: Sensitive to methane, CO, LPG, and other flammable gases.
• Adjustable Sensitivity: Onboard potentiometer to set the threshold for digital output.
• Low Power Consumption: Operates at 5V with minimal power requirements.
• Quick Response Time: Fast recovery and response for real-time monitoring.
• Compact Design: Easy to mount and integrate into various projects.

Technical Specifications

• Operating Voltage: 5V DC
• Digital Output: Dout – High/Low (threshold adjustable)
• Analog Output: Aout – 0-5V (proportional to gas concentration)
• Connections: Vcc (5V), GND, Dout, Aout
• Heater Power: ~5V, 150mA (heater consumes about 750mW)
• Detection Gases: Methane (CH4), Carbon Monoxide (CO), LPG, and other flammable gases
• Sensitivity: Adjustable via onboard potentiometer
• Module Dimensions: Approx. 32mm x 22mm x 27mm (including sensor)

Applications & Use Cases

• Gas Leakage Detectors: Home safety systems for natural gas or LPG leaks.
• Carbon Monoxide Alarms: Early warning systems for CO buildup in garages or workshops.
• Robotics: Integration into robots for gas detection in hazardous environments.
• IoT Projects: Connect to microcontrollers like Arduino or ESP32 for remote monitoring.
• Educational Projects: Teach gas sensing principles in STEM and engineering courses.

What's Included

• 1x MQ9 Gas Sensor Module (with analog and digital outputs)
• Note: No additional components required; ready to use with your microcontroller.

Compatibility

• Compatible with Arduino, Raspberry Pi, ESP32, STM32, and most 5V microcontrollers.
• Works with development boards and logic levels of 3.3V-5V (digital output is TTL compatible).
• Ideal for use with our popular Arduino starter kits and sensor shields.

MOKWN Recommendation

For gas detection projects, we recommend pairing the MQ9 with a reliable microcontroller like the Arduino Uno or ESP32. Additionally, consider our complementary sensor modules for a comprehensive environmental monitoring setup. The MQ9 is an excellent choice for both beginners and experienced makers due to its ease of use and dual output flexibility. Order now and enhance your safety and automation projects with this essential sensor!