MQ4 METHANE NATURAL GAS SENSOR
Rs. 106.20
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MQ4 METHANE NATURAL GAS SENSOR
Rs. 106.20
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The MQ4 Methane/Natural Gas Sensor Module detects methane (CH₄) and CNG with secondary sensitivity to smoke and alcohol. Dual output: analog voltage (AO) and digital TTL (DO) via LM393 comparator. Adjustable threshold via onboard potentiometer. No external components required. Compatible with Arduino, ESP32, and Raspberry Pi.
Pin Configuration:
- VCC — 5V
- GND — Ground
- DO — Digital output (TTL, active HIGH on detection)
- AO — Analog output
Specifications:
- Target Gas: Methane (CH₄), CNG
- Detection Range: 300–10000ppm
- Supply Voltage: 3–5V
- Comparator IC: LM393
Applications:
- Home and industrial methane/natural gas leak detection
- CNG gas alarm systems
- Arduino/ESP32 gas sensing projects
