The MQ-6 LPG Gas Sensor Module is a highly sensitive, low-cost gas detection module designed for identifying LPG, butane, propane leakage in homes, industrial environments, safety monitoring systems, IoT projects, and automation setups. Operating at +5V, the MQ-6 sensor provides both analog and digital outputs, allowing seamless integration with microcontrollers such as Arduino, ESP32, Raspberry Pi, PIC, STM32, and other embedded platforms. With rapid response, long life, and adjustable digital sensitivity, it is widely used in gas leakage detection systems, smart alarms, and safety monitoring devices across Bangladesh.

The MQ-6 sensor module uses a high-sensitivity semiconductor gas sensing element capable of detecting LPG, propane, and butane gases with fast response and stable performance. The module includes an onboard comparator for digital output, an adjustable potentiometer to control sensitivity levels, and indicator LEDs for status feedback.

It operates within a 0–5V analog range, enabling real-time gas concentration monitoring, while the digital output provides threshold-based gas detection for alarm systems. With a 20-second preheat time, the sensor reaches optimal accuracy and is suitable for home safety devices, gas cylinder leakage detection, kitchen monitoring systems, industrial gas safety alarms, and smart IoT energy management systems.

Features:

• Works on +5V power supply for easy interfacing.

• Detects LPG, propane, and butane gases with high sensitivity.

• Supports analog output for variable gas concentration measurement.

• Supports digital output (0/5V) for threshold-based alarms and automation.

• Onboard potentiometer to adjust digital sensitivity.

• Requires only 20 seconds preheat time for stable operation.

• Suitable for both industrial and household gas leakage detection.

• Easy microcontroller integration for safety systems and IoT projects.

• Stable performance with long sensor lifespan.

• LED indicators for power and output status.

• Ideal for smart alarms, gas safety devices, home automation, HVAC monitoring, and leak detection systems.

How to Use:

• Power the module using a 5V DC supply.

• Allow 20 seconds preheat before taking readings.

• Read analog output (A0) for gas concentration measurement.

• Use digital output (D0) for threshold-based gas alerts.

• Adjust the onboard potentiometer to set sensitivity level for D0.

• Connect digital output to buzzers, relays, or alarm modules for automatic activation.

• Use clean air for calibration before installation.

• Mount the sensor at a height where LPG gas tends to accumulate (near the floor area).

Product Instructions:

• Avoid exposing the sensor to water, organic solvents, or corrosive gases.

• Do not power the heating coil without proper supply voltage.

• Ensure proper ventilation for accurate detection.

• Allow the module to warm up during first-time use for best sensitivity.

• Keep away from strong airflow or wind to prevent unstable readings.

• Install securely in gas-prone areas like kitchens, storage rooms, and workshops.

Specifications:

• Operating Voltage: +5V

• Gas Detection: LPG, Butane, Propane

• Analog Output Voltage: 0–5V

• Digital Output Voltage: 0V or 5V (TTL)

• Preheat Time: 20 seconds

• Adjustable Sensitivity: Yes (via potentiometer)

• Sensor Type: Semiconductor gas sensor

• Module Compatibility: Arduino, ESP32, Raspberry Pi, STM32

• Output Modes: Analog + Digital

• Indicator LEDs: Power + Output

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