mq-9 module Carbon Monoxide (CO) and flammable gas sensor
The MQ-9 Gas Sensor Module is a versatile and cost-effective sensor designed to detect carbon monoxide (CO) and various flammable gases in the air. It offers a detection range of 10–10,000 ppm for CO and 100–10,000 ppm for combustible gases, making it suitable for safety monitoring and environmental sensing applications. The module provides both analog and digital outputs, with an onboard potentiometer for adjustable sensitivity and alarm thresholds. Operating from a 5V DC supply, the MQ-9 module can be easily interfaced with Arduino, microcontrollers, and embedded systems for gas detection projects.
تُعد وحدة استشعار الغاز MQ-9 مستشعرًا اقتصاديًا ومتعدد الاستخدامات للكشف عن غاز أول أكسيد الكربون (CO) والغازات القابلة للاشتعال في الهواء. توفر نطاق كشف يتراوح بين 10 إلى 10,000 جزء في المليون لغاز CO و100 إلى 10,000 جزء في المليون للغازات القابلة للاشتعال، مما يجعلها مناسبة لتطبيقات السلامة والمراقبة البيئية. تحتوي الوحدة على مخرجات تناظرية ورقمية مع إمكانية ضبط مستوى الحساسية عبر مقاومة متغيرة مدمجة. تعمل بجهد 5 فولت تيار مستمر ويمكن توصيلها بسهولة مع أردوينو والمتحكمات الدقيقة والأنظمة المدمجة.
The MQ-9 Carbon Monoxide and Flammable Gas Sensor Module is designed to monitor the presence and concentration of carbon monoxide (CO) and combustible gases such as methane, liquefied petroleum gas (LPG), and other hydrocarbon-based fuels.
Built around the reliable MQ-9 gas sensing element, this module provides both analog and digital outputs, allowing it to be used in a wide variety of gas detection and safety applications. The analog output delivers a voltage proportional to the detected gas concentration, while the digital output generates a LOW-level TTL signal when gas levels exceed the user-defined threshold.
An onboard potentiometer enables easy adjustment of the digital output sensitivity to suit specific application requirements. The module features an onboard LED indicator for power and status monitoring, simplifying installation and operation.
Operating at 5V DC and consuming less than 150mA, the MQ-9 sensor can be easily integrated with Arduino boards, Raspberry Pi systems, and other microcontrollers. Its stable performance, long operating life, and high sensitivity make it suitable for indoor air quality monitoring, gas leak detection, and industrial safety systems.
Note: The MQ-9 sensor requires a preheating period before delivering stable and accurate readings.
Specifications
| Parameter | Specification |
|---|---|
| Product Name | MQ-9 Gas Sensor Module |
| Main Sensor | MQ-9 |
| Target Gases | Carbon Monoxide (CO), Flammable Gases |
| CO Detection Range | 10 – 10,000 ppm |
| Flammable Gas Detection Range | 100 – 10,000 ppm |
| Operating Voltage | 5V DC |
| Current Consumption | < 150mA |
| Operating Temperature | -10°C to 50°C |
| Output Types | Analog Output (AO), Digital Output (DO) |
| Digital Output Logic | TTL Active LOW |
| Sensitivity Adjustment | Onboard Potentiometer |
| Indicators | Power and Status LEDs |
| Interface Compatibility | Arduino, Microcontrollers, Embedded Systems |
Applications
- Carbon monoxide detection systems
- Combustible gas leak alarms
- Industrial safety monitoring
- Home safety and smart home systems
- Indoor air quality monitoring
- Gas leakage detection equipment
- Arduino and IoT projects
- Laboratory gas monitoring
- Ventilation control systems
- Educational and research applications