MQ-4 Methane Gas Sensor Module
The MQ-4 Methane and CNG Gas Leakage Detector Sensor Module is an industrial-grade electrochemical sensing solution engineered for high-precision environmental safety tracking. Driven by a rugged Tin Dioxide (SnO2) semiconductor surface layer, this module boasts exceptional sensitivity to Methane (CH4) and Natural Gas within a detection range of 200 to 10,000 ppm, while demonstrating low cross-sensitivity to cooking smoke or alcohol vapors. The onboard breakout carrier electronics feature a versatile dual-signal layout: a 0-5V Analog Output (AO) for continuous real-time parts-per-million mapping and a TTL Digital Output (DO) managed by an onboard voltage comparator with an adjustable threshold potentiometer for immediate binary safety alarm triggers. Operating on a standard 5V power supply, it is the definitive hardware pick for smart home kitchen safety grids, CNG vehicle safety modules, biogas plant monitoring systems, and industrial factory ventilation alarms using Arduino, ESP32, or Raspberry Pi
₹ 89
₹ 149
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| Made In : | India |
The MQ-4 Gas Sensor Module is designed for detecting Methane (CH₄), CNG, natural gas, and other combustible gases. It is widely used in gas leakage detection and safety monitoring systems. With both analog and digital outputs, along with adjustable sensitivity, this module is easy to integrate with Arduino, ESP32, and other microcontrollers for real-time gas detection and alert systems.
Key Features
- Detects Methane (CH₄), CNG, natural gas, and combustible 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 gas detection
- Easy interface with Arduino and IoT platforms
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | MQ-4 Gas Sensor |
| Detectable Gases | Methane (CH₄), CNG, Natural Gas |
| 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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