Name: MQ2 Smoke Sensor Module
Brand: Oxymora
SKU: OM0046
Availability: InStock

MQ2 Smoke Sensor Module

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The MQ2 Smoke Sensor Module detects smoke and flammable gases such as LPG, propane, methane, hydrogen, alcohol, and carbon monoxide. It provides analog and digital outputs, making it suitable for fire safety and gas leakage detection systems.

SKU: OM0046

Brand: Oxymora

Product details

The MQ2 Smoke Sensor Module uses a highly sensitive SnO₂ semiconductor gas sensor whose conductivity increases with rising levels of combustible gases and smoke in the environment. The module outputs an analog signal proportional to the gas concentration, enabling real-time monitoring.
A built-in comparator circuit with adjustable sensitivity (potentiometer) generates a digital alarm signal when the gas concentration crosses a user-defined threshold. Power and status indicator LEDs enhance usability and debugging.
The MQ2 module is widely used in home safety systems, industrial gas monitoring, smart automation, and fire-prevention devices. It is compatible with Arduino, ESP, STM, and Raspberry Pi platforms.

Specifications

Sensor TypeMQ2 Smoke & Flammable Gas Sensor
Gases DetectedSmoke, LPG, Propane, Methane, Hydrogen, CO, Alcohol & other flammable gases
Operating Voltage5V DC
Output TypeAnalog AO & Digital DO
SensitivityHigh sensitivity and fast response time
Warm-up Time≈ 20 seconds (initial), full performance after warm-up
Sensitivity AdjustmentOnboard potentiometer
Indicator LEDsPower LED & Digital Alarm LED
ApplicationsFire alarms, smoke detectors, gas leakage alarms, home/industrial safety systems, smart automation, IoT gas monitoring projects