ALLNET 4duino MQ-6 LPG Gas Sensor (ALL_OY_3332)

The ALLNET 4duino MQ-6 LPG Gas Sensor (ALL_OY_3332) is a high-quality semiconductor gas sensor designed for detecting LPG (propane, butane), natural gas, and coal gas. It provides both analog and digital output signals, making it ideal for integration with Arduino, Raspberry Pi, ESP32/ESP8266, and other microcontrollers. This sensor is perfect for gas leak detection, gas alarm systems, and smart home automation projects.

Advantages

High sensitivity to LPG, propane, and butane gases; adjustable threshold via onboard potentiometer; dual output (analog and digital) for flexible interfacing; power and digital output indicator LEDs for easy status monitoring; compact design with mounting holes for easy installation.

Suitable for

• Gas leak detection systems
• Gas alarm systems
• Smart home automation
• Industrial safety monitoring
• Educational projects and prototyping

Key specifications

• Sensor Type: Semiconductor Gas Sensor
• Target Gases: LPG (Propane, Butane), Natural Gas, Coal Gas
• Operating Voltage: 5V DC
• Detection Range (LPG): 300 - 10,000 ppm
• Output Signal: Analog (0-5V), Digital (TTL)
• Interface: 4-pin header (VCC, GND, DOUT, AOUT)
• Heater Voltage: 5V DC
• Response Time: ≤ 10s
• Recovery Time: ≤ 30s
• Operating Temperature: -20°C to 50°C
• Operating Humidity: ≤ 95% RH (non-condensing)
• Adjustable Threshold: Yes, via onboard potentiometer
• Indicator LEDs: Power LED, Digital Output LED
• Main Chip: MQ-6 Sensor, LM393 Comparator
• Mounting Holes: Yes, 2x M3 holes

Recommendations

For best performance, allow the sensor to preheat for at least 24 hours before first use. Use the onboard potentiometer to set the threshold for digital output. Ensure proper ventilation and avoid exposure to high concentrations of corrosive gases.