MQ-2 Flammable Gas and Smoke Sensor Module (Combustible Gas Sensor)

The MQ-2 Flammable Gas and Smoke Sensor Module is a widely used semiconductor gas sensor designed to detect combustible gases and smoke in the air. It is highly sensitive to LPG, propane, methane, hydrogen, and smoke, making it suitable for gas leakage detection, safety systems, and environmental monitoring. The module provides both analog and digital outputs and features an onboard LM393 comparator with adjustable sensitivity for easy interfacing with Arduino, ESP32, STM32, Raspberry Pi, and other embedded platforms.

Key Features -

• Detects flammable gases and smoke

• Sensitive to LPG, propane, methane, hydrogen and smoke

• Dual analog and digital outputs

• Adjustable sensitivity via onboard potentiometer

• Onboard LM393 comparator

• Fast response and recovery time

• Power and status LED indicators

• Easy microcontroller interfacing

• Stable and reliable performance

• Suitable for gas leakage alarm systems

Specifications -

• Product type - Gas Sensor Module

• Sensor type - Semiconductor Gas Sensor

• Detection gases - LPG, Propane, Methane, Hydrogen and Smoke

• Operating voltage - 5V DC

• Output type - Analog and Digital

• Comparator IC - LM393

• Sensitivity adjustment - Onboard Potentiometer

• Preheat time - Required for Accurate Readings

• Working current - Moderate Due to Heating Element

• Board type - Flammable Gas and Smoke Sensor Module

Applications -

• Gas leakage detection

• Smoke detection systems

• LPG leak monitoring

• Industrial safety systems

• Home safety alarms

• Arduino and IoT projects

• Environmental monitoring

• Embedded electronics