MQ-9 Gas Sensor Module – Carbon Monoxide (CO), Methane (CH₄), and LPG Detector Sensor
The Grove - Gas Sensor(MQ9) module is useful for gas leakage detection (in home and industry). It is suitable for detecting LPG, CO, CH4. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by using the potentiometer. The MQ-9 Gas Sensor Module detects Carbon Monoxide (CO), Methane (CH₄), and LPG (Liquefied Petroleum Gas). It provides analog and digital outputs, making it ideal for Arduino, ESP32, Raspberry Pi, and other microcontrollers in IoT, industrial safety, and smart home gas detection systems.
₹ 110
₹ 149
| : | |
| Made In : | India |
The MQ-9 Gas Sensor Module is a versatile gas detection module capable of sensing Carbon Monoxide (CO), Methane (CH₄), and LPG. It is widely used in safety systems and environmental monitoring applications. Featuring both analog and digital outputs, along with adjustable sensitivity, the MQ-9 module can be easily integrated with Arduino, ESP32, and other microcontrollers for real-time gas detection and alert systems.
Key Features
- Detects CO (Carbon Monoxide), Methane, and LPG gases
- Dual output: Analog (A0) and Digital (D0)
- Adjustable sensitivity via onboard potentiometer
- Fast response and high sensitivity
- Onboard comparator (LM393) for digital output
- LED indicators for power and detection
- Easy interface with Arduino and IoT platforms
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | MQ-9 Gas Sensor |
| Detectable Gases | CO, CH₄ (Methane), LPG |
| Operating Voltage | 5V DC |
| Output Type | Analog + Digital |
| Preheat Time | ~20 seconds (recommended longer for stable readings) |
| Sensitivity | Adjustable |
| Interface | 4-pin (VCC, GND, A0, D0) |
| Comparator IC | LM393 |
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